{"id":2051,"date":"2022-05-03T15:18:28","date_gmt":"2022-05-03T13:18:28","guid":{"rendered":"https:\/\/research.dii.unipd.it\/tes\/?page_id=2051"},"modified":"2026-04-11T15:46:32","modified_gmt":"2026-04-11T13:46:32","slug":"pump-jet-propulsion","status":"publish","type":"page","link":"https:\/\/research.dii.unipd.it\/tes\/pump-jet-propulsion\/","title":{"rendered":"Pump-Jet Propulsion"},"content":{"rendered":"<div class=\"gridContainer\">\n<div class=\"row\">\n<div class=\"col-xs-12 col-sm-12\">\n<h4 class=\"nova-e-text nova-e-text--size-xl nova-e-text--family-sans-serif nova-e-text--spacing-xs nova-e-text--color-inherit project-details-header__title\" style=\"text-align: center\"><span style=\"color: #000000\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-2060 size-medium\" src=\"https:\/\/research.dii.unipd.it\/tes\/wp-content\/uploads\/sites\/15\/2022\/05\/Pumpjet-propulsor-computational-model_W640-1-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/research.dii.unipd.it\/tes\/wp-content\/uploads\/sites\/15\/2022\/05\/Pumpjet-propulsor-computational-model_W640-1-300x225.jpg 300w, https:\/\/research.dii.unipd.it\/tes\/wp-content\/uploads\/sites\/15\/2022\/05\/Pumpjet-propulsor-computational-model_W640-1.jpg 311w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/span><\/h4>\n<h2 style=\"text-align: center\"><span style=\"color: #000000\"><strong>Research activities<\/strong><\/span><\/h2>\n<ul>\n<li>\n<h4 style=\"text-align: left\"><span style=\"color: #000000\">Experimental test on Pumps-Jet Propulsion with different geometry<\/span><\/h4>\n<\/li>\n<li>\n<h4 style=\"text-align: left\"><span style=\"color: #000000\">Numerical simulation with SST and LES turbulence models<br \/>\n<\/span><\/h4>\n<\/li>\n<\/ul>\n<h2 style=\"text-align: justify\"><span style=\"color: #000000\">Projects<\/span><\/h2>\n<p>Pump-jet, which is generally and widely adopted on underwater vehicle for application from deep sea exploration to mine clearing, consists of rotor, stator and duct, with the properties of high critical speed, high propulsion efficiency, great anti-cavitation performance and low radiated noise. The complex interaction of the flow field between the various components and the high degree of coupling with the appendage result in the requirements of in-depth research on the hydrodynamic performance and flow field for application and design.<br \/>\nFocuses on the pump-jet hydrodynamic performance, noise performance and flow field characteristics involving cavitation erosion and vortices properties of tip-clearance, the interaction between the rotor and the stator and the wake field, as well as the optimal design of pump-jet are concluded in the research.<br \/>\nUnder the existing comprehensive background of green energy-saving environment, the application field of pump-jet propulsion technology will be evaluated to be expanded to the field of civil underwater propulsion.<\/p>\n<h2 style=\"text-align: center\"><span style=\"color: #000000\">Tools<\/span><\/h2>\n<p style=\"text-align: left\"><span style=\"color: #000000\"><strong>Facility<\/strong> \u2013 <span style=\"color: #0000ff\"><a style=\"color: #0000ff\" href=\"https:\/\/research.dii.unipd.it\/tes\/facilities\/pump-facility\">Pump Facility<\/a><\/span><\/span><\/p>\n<p style=\"text-align: left\"><span style=\"color: #000000\"><strong>Mesh Tools<\/strong> \u2013 <span style=\"color: #0000ff\"><a class=\"\" style=\"color: #0000ff\" href=\"https:\/\/www.ansys.com\">ICEM<\/a><\/span><\/span><\/p>\n<p style=\"text-align: left\"><span style=\"color: #000000\"><strong>CFD Tools<\/strong> \u2013 <span style=\"color: #0000ff\"><a class=\"\" style=\"color: #0000ff\" href=\"https:\/\/www.ansys.com\">ANSYS CFX<\/a><\/span><\/span><\/p>\n<p style=\"text-align: left\"><span style=\"color: #000000\"><strong>Post Processing Tools<\/strong> \u2013 <span style=\"color: #0000ff\"><a class=\"\" style=\"color: #0000ff\" href=\"https:\/\/www.ansys.com\">ANSYS<\/a><\/span><\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h2 style=\"text-align: center;\"><span style=\"color: #000000;\">Contacts<\/span><\/h2>\n    <style>\n        .person-cards-grid {\n            display: grid;\n            gap: 20px;\n            align-items: start;\n            justify-content: center;\n            margin: 20px auto;\n        }\n\n        .person-cards-grid.cols-1-same-as-2 {\n            grid-template-columns: 380px;\n            max-width: 380px;\n        }\n\n        .person-cards-grid.cols-2-half {\n            grid-template-columns: repeat(2, 380px);\n            max-width: 780px;\n        }\n\n        .person-cards-grid.cols-3-inline {\n            grid-template-columns: repeat(3, 380px);\n            max-width: 1180px;\n        }\n\n        .person-cards-grid.cols-4-inline {\n            grid-template-columns: repeat(4, 300px);\n            max-width: 1260px;\n        }\n\n        .person-card-item {\n            background: #fff;\n            border: 1px solid #eee;\n            padding: 18px;\n            box-sizing: border-box;\n            width: 100%;\n            overflow: hidden;\n            transition: border-color 0.25s ease, box-shadow 0.25s ease;\n        }\n\n        .person-card-item:hover {\n            border: 1px solid #ccc;\n            box-shadow: 0 10px 24px rgba(0,0,0,0.08);\n        }\n\n        .person-card-photo-wrap {\n            text-align: center;\n            margin-bottom: 16px;\n        }\n\n        .person-card-photo {\n            display: block;\n            margin: 0 auto;\n            width: 198px;\n            height: 300px;\n            object-fit: cover;\n        }\n\n        .person-card-title {\n            margin: 0 0 10px 0;\n            text-align: center;\n            font-size: calc(0.5em + 10pt);\n            line-height: 1.2;\n            color: #000000;\n            font-weight: 700;\n        }\n\n        .person-card-role {\n            text-align: center;\n            margin-bottom: 16px;\n            color: #000000;\n        }\n\n        .person-card-contacts {\n            margin-top: 15px;\n            border-top: 1px solid #eee;\n            padding-top: 15px;\n            text-align: center;\n            color: #000000;\n        }\n\n        .person-card-phone {\n            margin-bottom: 8px;\n            text-align: center;\n            color: #000000;\n        }\n\n        .person-card-email a {\n            color: #808080;\n            word-break: break-all;\n            text-decoration: none;\n        }\n\n        .person-card-address {\n            margin-top: 8px;\n            text-align: center;\n            color: #000000;\n        }\n\n        .person-card-links {\n            margin-top: 18px;\n            text-align: center;\n        }\n\n        .person-card-links a.orcid-link {\n            display: inline-block;\n            margin: 6px 4px;\n            color: #00ccff !important;\n            text-decoration: none;\n            background: transparent !important;\n            border: none !important;\n            box-shadow: none !important;\n            padding: 0 !important;\n        }\n\n        .person-card-links a.orcid-link:hover {\n            color: #00ccff !important;\n            text-decoration: underline;\n            background: transparent !important;\n            border: none !important;\n            box-shadow: none !important;\n        }\n\n        .person-card-linkedin {\n            margin-top: 10px;\n        }\n\n        @media (max-width: 1280px) {\n            .person-cards-grid.cols-4-inline {\n                grid-template-columns: repeat(2, 300px);\n                max-width: 620px;\n            }\n        }\n\n        @media (max-width: 1200px) {\n            .person-cards-grid.cols-3-inline {\n                grid-template-columns: repeat(2, 380px);\n                max-width: 780px;\n            }\n        }\n\n        @media (max-width: 820px) {\n            .person-cards-grid.cols-2-half,\n            .person-cards-grid.cols-3-inline,\n            .person-cards-grid.cols-4-inline,\n            .person-cards-grid.cols-1-same-as-2 {\n                grid-template-columns: 1fr;\n                max-width: 100%;\n            }\n\n            .person-card-item {\n                max-width: 380px;\n                margin-left: auto;\n                margin-right: auto;\n            }\n\n            .person-cards-grid.cols-4-inline .person-card-item {\n                max-width: 300px;\n            }\n        }\n    <\/style>\n\n    <div class=\"person-cards-grid cols-2-half\">\n                                <article class=\"person-card-item\">\n                <div class=\"person-card-photo-wrap\">\n                    <img decoding=\"async\"\n                        src=\"https:\/\/research.dii.unipd.it\/tes\/wp-content\/uploads\/sites\/15\/2019\/05\/0-e1593289198105.jpg\"\n                        class=\"person-card-photo\"\n                        alt=\"PhD Giorgio   Pavesi\"\n                        loading=\"lazy\"\n                        width=\"198\"\n                        height=\"300\"\n                    >\n                <\/div>\n\n                <h2 class=\"person-card-title\"><strong>PhD Giorgio   Pavesi<\/strong><\/h2>\n\n                                    <p class=\"person-card-role\">\n                                                    <strong>Associate professor<\/strong>\n                                                                            <br>\n                            Group: <small>TURBOMACHINERY<\/small>\n                                            <\/p>\n                \n                                    <div class=\"person-card-contacts\">\n                                                    <div class=\"person-card-phone\">\n                                +39 049 827 6768                            <\/div>\n                        \n                                                    <div class=\"person-card-email\">\n                                <a href=\"mailto:giorgio.pavesi@unipd.it\" style=\"color: #808080;\">\n                                    giorgio.pavesi@unipd.it                                <\/a>\n                            <\/div>\n                        \n                                            <\/div>\n                \n                                    <div class=\"person-card-links\">\n                                                    <a href=\"https:\/\/orcid.org\/0000-0002-2315-4358\" target=\"_blank\" rel=\"noopener noreferrer\" class=\"orcid-link\">\n                                Orcid Profile\n                            <\/a>\n                        \n                        \n                                            <\/div>\n                            <\/article>\n                                <article class=\"person-card-item\">\n                <div class=\"person-card-photo-wrap\">\n                    <img decoding=\"async\"\n                        src=\"https:\/\/research.dii.unipd.it\/tes\/wp-content\/uploads\/sites\/15\/2023\/03\/\u5fae\u4fe1\u56fe\u7247_20230329142426-1.jpg\"\n                        class=\"person-card-photo\"\n                        alt=\"MSc Yunkai Zhou\"\n                        loading=\"lazy\"\n                        width=\"198\"\n                        height=\"300\"\n                    >\n                <\/div>\n\n                <h2 class=\"person-card-title\"><strong>MSc Yunkai Zhou<\/strong><\/h2>\n\n                                    <p class=\"person-card-role\">\n                                                    <strong>PhD student<\/strong>\n                                                                            <br>\n                            Group: <small>TURBOMACHINERY<\/small>\n                                            <\/p>\n                \n                                    <div class=\"person-card-contacts\">\n                        \n                                                    <div class=\"person-card-email\">\n                                <a href=\"mailto:yunkai.zhou@studenti.unipd.it\" style=\"color: #808080;\">\n                                    yunkai.zhou@studenti.unipd.it                                <\/a>\n                            <\/div>\n                        \n                                            <\/div>\n                \n                            <\/article>\n            <\/div>\n    \n<h2 style=\"text-align: center;\"><span style=\"color: #000000;\">Publications<\/span><\/h2>\n<ol>\n<div class=\"teachpress_pub_list\"><form name=\"tppublistform\" method=\"get\"><a name=\"tppubs\" id=\"tppubs\"><\/a><\/form><div class=\"teachpress_publication_list\"><h3 class=\"tp_h3\" id=\"tp_h3_2025\">2025<\/h3><div class=\"tp_publication tp_publication_article\"><div class=\"tp_pub_image_left\"><\/div><div class=\"tp_pub_info\"><p class=\"tp_pub_author\"> Zhou, Yunkai;  Yuan, Jianping;  Fu, Yanxia;  Ye, Shirong;  Pavesi, Giorgio;  Cavazzini, Giovanna<\/p><p class=\"tp_pub_title\"><a class=\"tp_title_link\" onclick=\"teachpress_pub_showhide('3','tp_links')\" style=\"cursor:pointer;\">Analysis of hydraulic loss of the pump-jet with accelerating and decelerating ducts via entropy generation theory<\/a> <span class=\"tp_pub_type tp_  article\">Journal Article<\/span> <\/p><p class=\"tp_pub_additional\"><span class=\"tp_pub_additional_in\">In: <\/span><span class=\"tp_pub_additional_journal\">Physics of Fluids, <\/span><span class=\"tp_pub_additional_volume\">vol. 37, <\/span><span class=\"tp_pub_additional_issue\">iss. 7, <\/span><span class=\"tp_pub_additional_year\">2025<\/span>, <span class=\"tp_pub_additional_issn\">ISSN: 10897666<\/span>.<\/p><p class=\"tp_pub_menu\"><span class=\"tp_abstract_link\"><a id=\"tp_abstract_sh_3\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('3','tp_abstract')\" title=\"Show abstract\" style=\"cursor:pointer;\">Abstract<\/a><\/span> | <span class=\"tp_resource_link\"><a id=\"tp_links_sh_3\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('3','tp_links')\" title=\"Show links and resources\" style=\"cursor:pointer;\">Links<\/a><\/span> | <span class=\"tp_bibtex_link\"><a id=\"tp_bibtex_sh_3\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('3','tp_bibtex')\" title=\"Show BibTeX entry\" style=\"cursor:pointer;\">BibTeX<\/a><\/span> | <span class=\"tp_pub_tags_label\">Tags: <\/span><a rel=\"nofollow\" href=\"https:\/\/research.dii.unipd.it\/tes\/pump-jet-propulsion\/?tgid=413#tppubs\" title=\"Show all publications which have a relationship to this tag\">Accelerating Decelerating Ducts<\/a>, <a rel=\"nofollow\" href=\"https:\/\/research.dii.unipd.it\/tes\/pump-jet-propulsion\/?tgid=412#tppubs\" title=\"Show all publications which have a relationship to this tag\">Duct<\/a>, <a rel=\"nofollow\" href=\"https:\/\/research.dii.unipd.it\/tes\/pump-jet-propulsion\/?tgid=414#tppubs\" title=\"Show all publications which have a relationship to this tag\">Entropy<\/a>, <a rel=\"nofollow\" href=\"https:\/\/research.dii.unipd.it\/tes\/pump-jet-propulsion\/?tgid=411#tppubs\" title=\"Show all publications which have a relationship to this tag\">Pump Jet<\/a><\/p><div class=\"tp_bibtex\" id=\"tp_bibtex_3\" style=\"display:none;\"><div class=\"tp_bibtex_entry\"><pre>@article{Zhou2025,<br \/>\r\ntitle = {Analysis of hydraulic loss of the pump-jet with accelerating and decelerating ducts via entropy generation theory},<br \/>\r\nauthor = {Yunkai Zhou and Jianping Yuan and Yanxia Fu and Shirong Ye and Giorgio Pavesi and Giovanna Cavazzini},<br \/>\r\ndoi = {10.1063\/5.0273790},<br \/>\r\nissn = {10897666},<br \/>\r\nyear  = {2025},<br \/>\r\ndate = {2025-01-01},<br \/>\r\nurldate = {2025-01-01},<br \/>\r\njournal = {Physics of Fluids},<br \/>\r\nvolume = {37},<br \/>\r\nissue = {7},<br \/>\r\npublisher = {American Institute of Physics},<br \/>\r\nabstract = {Pump-jets serve as critical propulsion systems for underwater vehicles, directly impacting navigation safety and energy efficiency. Traditional pressure-drop analysis methods, while widely adopted, exhibit limitations in spatially resolving localized energy dissipation mechanisms. This study implements entropy generation theory to systematically evaluate irreversible energy losses in pump-jet, with particular emphasis on quantifying the spatial distribution and magnitude of hydraulic losses. Through rigorous numerical investigations of accelerating and decelerating duct configurations with varying camber and attack angles, comparative analyses of energy characteristics are conducted across distinct pump-jet components. The results demonstrate that entropy generation theory proves advantageous when assessing the energy characteristics of pump-jet. Compared to accelerating duct pump-jet, the stator and pre-stator of decelerating duct pump-jet absorb a larger share of hydraulic losses, demonstrating superior hydrodynamic performance. Flow characteristics reveal that the variation of f and \u03b1 leads to the significant influence on the entropy production in the flow field, while the instability mechanism of impeller and stator trailing vortices also share prominent diversity. Thus, f and \u03b1 can serve as core parameters to distinguish between accelerating and decelerating ducts. Selecting appropriate parameters based on different operating conditions can significantly enhance performance and safety. Overall, this study provides thermomechanical guidelines for performance optimization through strategic geometric parameter selection under diverse operational conditions.},<br \/>\r\nkeywords = {Accelerating Decelerating Ducts, Duct, Entropy, Pump Jet},<br \/>\r\npubstate = {published},<br \/>\r\ntppubtype = {article}<br \/>\r\n}<br \/>\r\n<\/pre><\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('3','tp_bibtex')\">Close<\/a><\/p><\/div><div class=\"tp_abstract\" id=\"tp_abstract_3\" style=\"display:none;\"><div class=\"tp_abstract_entry\">Pump-jets serve as critical propulsion systems for underwater vehicles, directly impacting navigation safety and energy efficiency. Traditional pressure-drop analysis methods, while widely adopted, exhibit limitations in spatially resolving localized energy dissipation mechanisms. This study implements entropy generation theory to systematically evaluate irreversible energy losses in pump-jet, with particular emphasis on quantifying the spatial distribution and magnitude of hydraulic losses. Through rigorous numerical investigations of accelerating and decelerating duct configurations with varying camber and attack angles, comparative analyses of energy characteristics are conducted across distinct pump-jet components. The results demonstrate that entropy generation theory proves advantageous when assessing the energy characteristics of pump-jet. Compared to accelerating duct pump-jet, the stator and pre-stator of decelerating duct pump-jet absorb a larger share of hydraulic losses, demonstrating superior hydrodynamic performance. Flow characteristics reveal that the variation of f and \u03b1 leads to the significant influence on the entropy production in the flow field, while the instability mechanism of impeller and stator trailing vortices also share prominent diversity. Thus, f and \u03b1 can serve as core parameters to distinguish between accelerating and decelerating ducts. Selecting appropriate parameters based on different operating conditions can significantly enhance performance and safety. Overall, this study provides thermomechanical guidelines for performance optimization through strategic geometric parameter selection under diverse operational conditions.<\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('3','tp_abstract')\">Close<\/a><\/p><\/div><div class=\"tp_links\" id=\"tp_links_3\" style=\"display:none;\"><div class=\"tp_links_entry\"><ul class=\"tp_pub_list\"><li><i class=\"ai ai-doi\"><\/i><a class=\"tp_pub_list\" href=\"https:\/\/dx.doi.org\/10.1063\/5.0273790\" title=\"Follow DOI:10.1063\/5.0273790\" target=\"_blank\">doi:10.1063\/5.0273790<\/a><\/li><\/ul><\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('3','tp_links')\">Close<\/a><\/p><\/div><\/div><\/div><h3 class=\"tp_h3\" id=\"tp_h3_2023\">2023<\/h3><div class=\"tp_publication tp_publication_article\"><div class=\"tp_pub_image_left\"><\/div><div class=\"tp_pub_info\"><p class=\"tp_pub_author\"> Zhou, Yunkai;  Pavesi, Giorgio;  Yuan, Jianping;  Fu, Yanxia;  Gao, Quanlin<\/p><p class=\"tp_pub_title\"><a class=\"tp_title_link\" onclick=\"teachpress_pub_showhide('22','tp_links')\" style=\"cursor:pointer;\">Effects of duct profile parameters on flow characteristics of pump-jet: A numerical analysis on accelerating and decelerating ducts distinguished by cambers and angles of attack<\/a> <span class=\"tp_pub_type tp_  article\">Journal Article<\/span> <\/p><p class=\"tp_pub_additional\"><span class=\"tp_pub_additional_in\">In: <\/span><span class=\"tp_pub_additional_journal\">Ocean Engineering, <\/span><span class=\"tp_pub_additional_volume\">vol. 281, <\/span><span class=\"tp_pub_additional_year\">2023<\/span>, <span class=\"tp_pub_additional_issn\">ISSN: 00298018<\/span>.<\/p><p class=\"tp_pub_menu\"><span class=\"tp_abstract_link\"><a id=\"tp_abstract_sh_22\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('22','tp_abstract')\" title=\"Show abstract\" style=\"cursor:pointer;\">Abstract<\/a><\/span> | <span class=\"tp_resource_link\"><a id=\"tp_links_sh_22\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('22','tp_links')\" title=\"Show links and resources\" style=\"cursor:pointer;\">Links<\/a><\/span> | <span class=\"tp_bibtex_link\"><a id=\"tp_bibtex_sh_22\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('22','tp_bibtex')\" title=\"Show BibTeX entry\" style=\"cursor:pointer;\">BibTeX<\/a><\/span> | <span class=\"tp_pub_tags_label\">Tags: <\/span><a rel=\"nofollow\" href=\"https:\/\/research.dii.unipd.it\/tes\/pump-jet-propulsion\/?tgid=43#tppubs\" title=\"Show all publications which have a relationship to this tag\">Duct profile parameters<\/a>, <a rel=\"nofollow\" href=\"https:\/\/research.dii.unipd.it\/tes\/pump-jet-propulsion\/?tgid=44#tppubs\" title=\"Show all publications which have a relationship to this tag\">Flow characteristics<\/a>, <a rel=\"nofollow\" href=\"https:\/\/research.dii.unipd.it\/tes\/pump-jet-propulsion\/?tgid=45#tppubs\" title=\"Show all publications which have a relationship to this tag\">Hydrodynamic performance<\/a>, <a rel=\"nofollow\" href=\"https:\/\/research.dii.unipd.it\/tes\/pump-jet-propulsion\/?tgid=46#tppubs\" title=\"Show all publications which have a relationship to this tag\">Numerical simulation<\/a>, <a rel=\"nofollow\" href=\"https:\/\/research.dii.unipd.it\/tes\/pump-jet-propulsion\/?tgid=47#tppubs\" title=\"Show all publications which have a relationship to this tag\">Pump-jet<\/a><\/p><div class=\"tp_bibtex\" id=\"tp_bibtex_22\" style=\"display:none;\"><div class=\"tp_bibtex_entry\"><pre>@article{Zhou2023,<br \/>\r\ntitle = {Effects of duct profile parameters on flow characteristics of pump-jet: A numerical analysis on accelerating and decelerating ducts distinguished by cambers and angles of attack},<br \/>\r\nauthor = {Yunkai Zhou and Giorgio Pavesi and Jianping Yuan and Yanxia Fu and Quanlin Gao},<br \/>\r\ndoi = {10.1016\/j.oceaneng.2023.114733},<br \/>\r\nissn = {00298018},<br \/>\r\nyear  = {2023},<br \/>\r\ndate = {2023-01-01},<br \/>\r\njournal = {Ocean Engineering},<br \/>\r\nvolume = {281},<br \/>\r\npublisher = {Elsevier Ltd},<br \/>\r\nabstract = {The aim of this study is to investigate the effects of duct profile parameters cambers and angles of attack that distinguish accelerating and decelerating ducts on the flow characteristics of pump-jet. A detailed numerical analysis is carried out to compare the properties of pump-jets with different cambers and attack angles, and to explore the mutual interaction between the duct and components of pump-jet. Beforehand, the numerical methodology is validated by comparing the experiment and simulation results of the pump-jet under mooring conditions and propeller VP1304. Five cambers (f = 0.5t, 0.25t, 0, \u22120.25t, \u22120.5t) and three attack angles (\u03b1 = 4\u00b0, 0\u00b0, \u22124\u00b0) of duct profile are considered carefully to distinguish accelerating and decelerating ducts, focusing on the propulsion performance and flow field information. The results show that the flow velocity at the outlet of the accelerating ducts is significantly higher compared to the inlet velocity, as opposed to the phenomenon produced by decelerating ducts. The variation of camber makes the internal evolution of the flow field more intuitive compared with the change of angles of attack. Further results indicate that the maximum efficiency of pump-jet drops after the modest growth as the cambers decrease, whose location shifts towards the lower advance coefficient J. The alteration of \u03b1 leads to making the trend more direct and apparent for the decelerating and accelerating ducts. The high f is advantageous for the cavitation resistance of inside components, like rotor blades and stator blades. The impacts of changing \u03b1 on the distribution of pressure in pump-jets with accelerating and decelerating ducts are more prominent than changing f. Moreover, the effects of both variations of f and \u03b1 on the circumferential distributions of the velocity components are prominent, while there are still significant differences between these changes. Additionally, the velocity distribution at the inlet of pump-jets with decelerating ducts is higher than that at the outlet, and the velocity distribution of pump-jets with accelerating ducts presents the opposite pattern.},<br \/>\r\nkeywords = {Duct profile parameters, Flow characteristics, Hydrodynamic performance, Numerical simulation, Pump-jet},<br \/>\r\npubstate = {published},<br \/>\r\ntppubtype = {article}<br \/>\r\n}<br \/>\r\n<\/pre><\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('22','tp_bibtex')\">Close<\/a><\/p><\/div><div class=\"tp_abstract\" id=\"tp_abstract_22\" style=\"display:none;\"><div class=\"tp_abstract_entry\">The aim of this study is to investigate the effects of duct profile parameters cambers and angles of attack that distinguish accelerating and decelerating ducts on the flow characteristics of pump-jet. A detailed numerical analysis is carried out to compare the properties of pump-jets with different cambers and attack angles, and to explore the mutual interaction between the duct and components of pump-jet. Beforehand, the numerical methodology is validated by comparing the experiment and simulation results of the pump-jet under mooring conditions and propeller VP1304. Five cambers (f = 0.5t, 0.25t, 0, \u22120.25t, \u22120.5t) and three attack angles (\u03b1 = 4\u00b0, 0\u00b0, \u22124\u00b0) of duct profile are considered carefully to distinguish accelerating and decelerating ducts, focusing on the propulsion performance and flow field information. The results show that the flow velocity at the outlet of the accelerating ducts is significantly higher compared to the inlet velocity, as opposed to the phenomenon produced by decelerating ducts. The variation of camber makes the internal evolution of the flow field more intuitive compared with the change of angles of attack. Further results indicate that the maximum efficiency of pump-jet drops after the modest growth as the cambers decrease, whose location shifts towards the lower advance coefficient J. The alteration of \u03b1 leads to making the trend more direct and apparent for the decelerating and accelerating ducts. The high f is advantageous for the cavitation resistance of inside components, like rotor blades and stator blades. The impacts of changing \u03b1 on the distribution of pressure in pump-jets with accelerating and decelerating ducts are more prominent than changing f. Moreover, the effects of both variations of f and \u03b1 on the circumferential distributions of the velocity components are prominent, while there are still significant differences between these changes. Additionally, the velocity distribution at the inlet of pump-jets with decelerating ducts is higher than that at the outlet, and the velocity distribution of pump-jets with accelerating ducts presents the opposite pattern.<\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('22','tp_abstract')\">Close<\/a><\/p><\/div><div class=\"tp_links\" id=\"tp_links_22\" style=\"display:none;\"><div class=\"tp_links_entry\"><ul class=\"tp_pub_list\"><li><i class=\"ai ai-doi\"><\/i><a class=\"tp_pub_list\" href=\"https:\/\/dx.doi.org\/10.1016\/j.oceaneng.2023.114733\" title=\"Follow DOI:10.1016\/j.oceaneng.2023.114733\" target=\"_blank\">doi:10.1016\/j.oceaneng.2023.114733<\/a><\/li><\/ul><\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('22','tp_links')\">Close<\/a><\/p><\/div><\/div><\/div><div class=\"tp_publication tp_publication_techreport\"><div class=\"tp_pub_image_left\"><\/div><div class=\"tp_pub_info\"><p class=\"tp_pub_author\"> Zhou, Yunkai;  Pavesi, Giorgio;  Cavazzini, Giovanna;  Yuan, Jianping;  Fu, Yanxia;  Gao, Quanlin<\/p><p class=\"tp_pub_title\"><a class=\"tp_title_link\" onclick=\"teachpress_pub_showhide('23','tp_links')\" style=\"cursor:pointer;\">Comparative numerical investigation on flow characteristics of pump-jets with accelerating duct and decelerating duct<\/a> <span class=\"tp_pub_type tp_  techreport\">Technical Report<\/span> <\/p><p class=\"tp_pub_additional\"><span class=\"tp_pub_additional_year\">2023<\/span>.<\/p><p class=\"tp_pub_menu\"><span class=\"tp_abstract_link\"><a id=\"tp_abstract_sh_23\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('23','tp_abstract')\" title=\"Show abstract\" style=\"cursor:pointer;\">Abstract<\/a><\/span> | <span class=\"tp_resource_link\"><a id=\"tp_links_sh_23\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('23','tp_links')\" title=\"Show links and resources\" style=\"cursor:pointer;\">Links<\/a><\/span> | <span class=\"tp_bibtex_link\"><a id=\"tp_bibtex_sh_23\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('23','tp_bibtex')\" title=\"Show BibTeX entry\" style=\"cursor:pointer;\">BibTeX<\/a><\/span> | <span class=\"tp_pub_tags_label\">Tags: <\/span><a rel=\"nofollow\" href=\"https:\/\/research.dii.unipd.it\/tes\/pump-jet-propulsion\/?tgid=48#tppubs\" title=\"Show all publications which have a relationship to this tag\">Flow field<\/a>, <a rel=\"nofollow\" href=\"https:\/\/research.dii.unipd.it\/tes\/pump-jet-propulsion\/?tgid=45#tppubs\" title=\"Show all publications which have a relationship to this tag\">Hydrodynamic performance<\/a>, <a rel=\"nofollow\" href=\"https:\/\/research.dii.unipd.it\/tes\/pump-jet-propulsion\/?tgid=46#tppubs\" title=\"Show all publications which have a relationship to this tag\">Numerical simulation<\/a>, <a rel=\"nofollow\" href=\"https:\/\/research.dii.unipd.it\/tes\/pump-jet-propulsion\/?tgid=47#tppubs\" title=\"Show all publications which have a relationship to this tag\">Pump-jet<\/a><\/p><div class=\"tp_bibtex\" id=\"tp_bibtex_23\" style=\"display:none;\"><div class=\"tp_bibtex_entry\"><pre>@techreport{Zhou2023b,<br \/>\r\ntitle = {Comparative numerical investigation on flow characteristics of pump-jets with accelerating duct and decelerating duct},<br \/>\r\nauthor = {Yunkai Zhou and Giorgio Pavesi and Giovanna Cavazzini and Jianping Yuan and Yanxia Fu and Quanlin Gao},<br \/>\r\nurl = {https:\/\/ssrn.com\/abstract=4374636},<br \/>\r\nyear  = {2023},<br \/>\r\ndate = {2023-01-01},<br \/>\r\nabstract = {The mutual interaction between the duct and components of pump-jet can induce significant effects on the overall flow properties and inner flow field. In order to compare the properties of pump-jets with accelerating and decelerating ducts and investigate the effects of duct profiles parameters of two different ducts on the flow characteristics, a detailed numerical analysis is implemented on the flow characteristics and interaction of the pump-jet with different duct profile parameters. Beforehand, the comparison of experiment and simulation of propeller VP1304 and the pump-jet under mooring conditions are adopted to validate numerical methodology. In this paper, five cambers f (f=0.5t, 0.25t, 0,-0.25t,-0.5t) and three angles of attack \u03b1 (\u03b1= 4\u00b0, 0\u00b0,-4\u00b0) of duct profile, employed to distinguish accelerating and decelerating ducts, are considered carefully, focusing on the flow field information and propulsion performance. The results, including the comparison of single ducts with different f and \u03b1, and comparison of pump-jet with 2 types of ducts distinguished by different f and \u03b1, are exhibited. It shows that the flow velocity at the outlet of the accelerating ducts is significantly higher compared to the inlet velocity, as opposed to the phenomenon produced by decelerating ducts. Compared with the change of \u03b1, the variation of f makes the internal evolution of the flow field more intuitive. Further results indicate that the maximum efficiency of pump-jet drops after the modest growth as the cambers decrease, whose location shift towards the lower advance coefficient J. The alteration of \u03b1 leads to making the trend more direct and apparent for the decelerating and accelerating ducts. It is advantageous for the high f to the cavitation resistance of inside components, like rotor blades and stator blades. The impacts of changing \u03b1 on the distribution of pressure in pump-jets with accelerating and decelerating ducts are more prominent than changing f. Moreover, the effects of both variations of f and \u03b1 on the circumferential distributions of the velocity components are prominent, while there are still significant differences between these changes. Additionally, the velocity distribution at the inlet of pump-jets with decelerating ducts is higher than that at the outlet, and the velocity distribution of pump-jets with accelerating ducts presents the opposite pattern.},<br \/>\r\nkeywords = {Flow field, Hydrodynamic performance, Numerical simulation, Pump-jet},<br \/>\r\npubstate = {published},<br \/>\r\ntppubtype = {techreport}<br \/>\r\n}<br \/>\r\n<\/pre><\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('23','tp_bibtex')\">Close<\/a><\/p><\/div><div class=\"tp_abstract\" id=\"tp_abstract_23\" style=\"display:none;\"><div class=\"tp_abstract_entry\">The mutual interaction between the duct and components of pump-jet can induce significant effects on the overall flow properties and inner flow field. In order to compare the properties of pump-jets with accelerating and decelerating ducts and investigate the effects of duct profiles parameters of two different ducts on the flow characteristics, a detailed numerical analysis is implemented on the flow characteristics and interaction of the pump-jet with different duct profile parameters. Beforehand, the comparison of experiment and simulation of propeller VP1304 and the pump-jet under mooring conditions are adopted to validate numerical methodology. In this paper, five cambers f (f=0.5t, 0.25t, 0,-0.25t,-0.5t) and three angles of attack \u03b1 (\u03b1= 4\u00b0, 0\u00b0,-4\u00b0) of duct profile, employed to distinguish accelerating and decelerating ducts, are considered carefully, focusing on the flow field information and propulsion performance. The results, including the comparison of single ducts with different f and \u03b1, and comparison of pump-jet with 2 types of ducts distinguished by different f and \u03b1, are exhibited. It shows that the flow velocity at the outlet of the accelerating ducts is significantly higher compared to the inlet velocity, as opposed to the phenomenon produced by decelerating ducts. Compared with the change of \u03b1, the variation of f makes the internal evolution of the flow field more intuitive. Further results indicate that the maximum efficiency of pump-jet drops after the modest growth as the cambers decrease, whose location shift towards the lower advance coefficient J. The alteration of \u03b1 leads to making the trend more direct and apparent for the decelerating and accelerating ducts. It is advantageous for the high f to the cavitation resistance of inside components, like rotor blades and stator blades. The impacts of changing \u03b1 on the distribution of pressure in pump-jets with accelerating and decelerating ducts are more prominent than changing f. Moreover, the effects of both variations of f and \u03b1 on the circumferential distributions of the velocity components are prominent, while there are still significant differences between these changes. Additionally, the velocity distribution at the inlet of pump-jets with decelerating ducts is higher than that at the outlet, and the velocity distribution of pump-jets with accelerating ducts presents the opposite pattern.<\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('23','tp_abstract')\">Close<\/a><\/p><\/div><div class=\"tp_links\" id=\"tp_links_23\" style=\"display:none;\"><div class=\"tp_links_entry\"><ul class=\"tp_pub_list\"><li><i class=\"fas fa-globe\"><\/i><a class=\"tp_pub_list\" href=\"https:\/\/ssrn.com\/abstract=4374636\" title=\"https:\/\/ssrn.com\/abstract=4374636\" target=\"_blank\">https:\/\/ssrn.com\/abstract=4374636<\/a><\/li><\/ul><\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('23','tp_links')\">Close<\/a><\/p><\/div><\/div><\/div><h3 class=\"tp_h3\" id=\"tp_h3_2022\">2022<\/h3><div class=\"tp_publication tp_publication_article\"><div class=\"tp_pub_image_left\"><\/div><div class=\"tp_pub_info\"><p class=\"tp_pub_author\"> Zhou, Yunkai;  Pavesi, Giorgio;  Yuan, Jianping;  Fu, Yanxia<\/p><p class=\"tp_pub_title\"><a class=\"tp_title_link\" onclick=\"teachpress_pub_showhide('33','tp_links')\" style=\"cursor:pointer;\">A Review on Hydrodynamic Performance and Design of Pump-Jet: Advances, Challenges and Prospects<\/a> <span class=\"tp_pub_type tp_  article\">Journal Article<\/span> <\/p><p class=\"tp_pub_additional\"><span class=\"tp_pub_additional_in\">In: <\/span><span class=\"tp_pub_additional_journal\">Journal of Marine Science and Engineering, <\/span><span class=\"tp_pub_additional_volume\">vol. 10, <\/span><span class=\"tp_pub_additional_issue\">iss. 10, <\/span><span class=\"tp_pub_additional_year\">2022<\/span>, <span class=\"tp_pub_additional_issn\">ISSN: 20771312<\/span>.<\/p><p class=\"tp_pub_menu\"><span class=\"tp_abstract_link\"><a id=\"tp_abstract_sh_33\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('33','tp_abstract')\" title=\"Show abstract\" style=\"cursor:pointer;\">Abstract<\/a><\/span> | <span class=\"tp_resource_link\"><a id=\"tp_links_sh_33\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('33','tp_links')\" title=\"Show links and resources\" style=\"cursor:pointer;\">Links<\/a><\/span> | <span class=\"tp_bibtex_link\"><a id=\"tp_bibtex_sh_33\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('33','tp_bibtex')\" title=\"Show BibTeX entry\" style=\"cursor:pointer;\">BibTeX<\/a><\/span> | <span class=\"tp_pub_tags_label\">Tags: <\/span><a rel=\"nofollow\" href=\"https:\/\/research.dii.unipd.it\/tes\/pump-jet-propulsion\/?tgid=84#tppubs\" title=\"Show all publications which have a relationship to this tag\">design<\/a>, <a rel=\"nofollow\" href=\"https:\/\/research.dii.unipd.it\/tes\/pump-jet-propulsion\/?tgid=48#tppubs\" title=\"Show all publications which have a relationship to this tag\">Flow field<\/a>, <a rel=\"nofollow\" href=\"https:\/\/research.dii.unipd.it\/tes\/pump-jet-propulsion\/?tgid=45#tppubs\" title=\"Show all publications which have a relationship to this tag\">Hydrodynamic performance<\/a>, <a rel=\"nofollow\" href=\"https:\/\/research.dii.unipd.it\/tes\/pump-jet-propulsion\/?tgid=47#tppubs\" title=\"Show all publications which have a relationship to this tag\">Pump-jet<\/a><\/p><div class=\"tp_bibtex\" id=\"tp_bibtex_33\" style=\"display:none;\"><div class=\"tp_bibtex_entry\"><pre>@article{Zhou2022,<br \/>\r\ntitle = {A Review on Hydrodynamic Performance and Design of Pump-Jet: Advances, Challenges and Prospects},<br \/>\r\nauthor = {Yunkai Zhou and Giorgio Pavesi and Jianping Yuan and Yanxia Fu},<br \/>\r\nurl = {https:\/\/www.mdpi.com\/2077-1312\/10\/10\/1514},<br \/>\r\ndoi = {10.3390\/jmse10101514},<br \/>\r\nissn = {20771312},<br \/>\r\nyear  = {2022},<br \/>\r\ndate = {2022-01-01},<br \/>\r\nurldate = {2022-01-01},<br \/>\r\njournal = {Journal of Marine Science and Engineering},<br \/>\r\nvolume = {10},<br \/>\r\nissue = {10},<br \/>\r\npublisher = {MDPI},<br \/>\r\nabstract = {A pump-jet, which is generally and widely adopted on underwater vehicles for applications from deep sea exploration to mine clearing, consists of a rotor, stator, and duct, with the properties of high critical speed, high propulsion efficiency, great anti-cavitation performance, and low radiated noise. The complex interaction of the flow field between the various components and the high degree of coupling with the appendage result in the requirements of in-depth research on the hydrodynamic performance and flow field for application and design. Due to the initial application on the military field and complicated structure, there is scant literature in the evaluation of pump-jet performance and optimal design. This paper, in a comprehensive and specialized way, summarizes the pump-jet hydrodynamic performance, noise performance, and flow field characteristics involving cavitation erosion and vortices properties of tip-clearance, the interaction between the rotor and the stator and the wake field, as well as the optimal design of the pump-jet. The merits and applications range of numerical and experimental methods are overviewed as well as the design method. It also concludes the main challenges faced in practical applications and proposes a vision for future research. It was found that the compact structure and complex internal and external flow field make the pump-jet significantly different, also leading to higher performance. As the focus of cavitation research, vortices interact with the complex structure of the pump-jet, leading to instabilities of the flow field, such as vibration, radiated noise, and cavitation erosion. The effective approaches are adopted to reduce radiated pump-jet with minimal influence on the hydrodynamic performance, such as eliminating the tip clearance and installing the sawtooth duct. Advanced optimal technology can achieve high performance, cavitation performance, and acoustic performance, possessing good prospects. Further developments in investigation and the application of pump-jets in the multidisciplinary integration of fluid dynamics, acoustics, materials, chemistry, and bionics should be the main focus in future research.},<br \/>\r\nkeywords = {design, Flow field, Hydrodynamic performance, Pump-jet},<br \/>\r\npubstate = {published},<br \/>\r\ntppubtype = {article}<br \/>\r\n}<br \/>\r\n<\/pre><\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('33','tp_bibtex')\">Close<\/a><\/p><\/div><div class=\"tp_abstract\" id=\"tp_abstract_33\" style=\"display:none;\"><div class=\"tp_abstract_entry\">A pump-jet, which is generally and widely adopted on underwater vehicles for applications from deep sea exploration to mine clearing, consists of a rotor, stator, and duct, with the properties of high critical speed, high propulsion efficiency, great anti-cavitation performance, and low radiated noise. The complex interaction of the flow field between the various components and the high degree of coupling with the appendage result in the requirements of in-depth research on the hydrodynamic performance and flow field for application and design. Due to the initial application on the military field and complicated structure, there is scant literature in the evaluation of pump-jet performance and optimal design. This paper, in a comprehensive and specialized way, summarizes the pump-jet hydrodynamic performance, noise performance, and flow field characteristics involving cavitation erosion and vortices properties of tip-clearance, the interaction between the rotor and the stator and the wake field, as well as the optimal design of the pump-jet. The merits and applications range of numerical and experimental methods are overviewed as well as the design method. It also concludes the main challenges faced in practical applications and proposes a vision for future research. It was found that the compact structure and complex internal and external flow field make the pump-jet significantly different, also leading to higher performance. As the focus of cavitation research, vortices interact with the complex structure of the pump-jet, leading to instabilities of the flow field, such as vibration, radiated noise, and cavitation erosion. The effective approaches are adopted to reduce radiated pump-jet with minimal influence on the hydrodynamic performance, such as eliminating the tip clearance and installing the sawtooth duct. Advanced optimal technology can achieve high performance, cavitation performance, and acoustic performance, possessing good prospects. Further developments in investigation and the application of pump-jets in the multidisciplinary integration of fluid dynamics, acoustics, materials, chemistry, and bionics should be the main focus in future research.<\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('33','tp_abstract')\">Close<\/a><\/p><\/div><div class=\"tp_links\" id=\"tp_links_33\" style=\"display:none;\"><div class=\"tp_links_entry\"><ul class=\"tp_pub_list\"><li><i class=\"fas fa-globe\"><\/i><a class=\"tp_pub_list\" href=\"https:\/\/www.mdpi.com\/2077-1312\/10\/10\/1514\" title=\"https:\/\/www.mdpi.com\/2077-1312\/10\/10\/1514\" target=\"_blank\">https:\/\/www.mdpi.com\/2077-1312\/10\/10\/1514<\/a><\/li><li><i class=\"ai ai-doi\"><\/i><a class=\"tp_pub_list\" href=\"https:\/\/dx.doi.org\/10.3390\/jmse10101514\" title=\"Follow DOI:10.3390\/jmse10101514\" target=\"_blank\">doi:10.3390\/jmse10101514<\/a><\/li><\/ul><\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('33','tp_links')\">Close<\/a><\/p><\/div><\/div><\/div><\/div><\/div>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>Research activities Experimental test on Pumps-Jet Propulsion with different geometry Numerical simulation with SST and LES turbulence models Projects Pump-jet, which is generally and widely adopted on underwater vehicle for application from deep sea exploration to mine clearing, consists of rotor, stator and duct, with the properties of high critical speed, high propulsion efficiency, great&hellip; <br \/> <a class=\"read-more\" href=\"https:\/\/research.dii.unipd.it\/tes\/pump-jet-propulsion\/\">Read more<\/a><\/p>\n","protected":false},"author":30,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"ngg_post_thumbnail":0,"footnotes":""},"folder":[],"class_list":["post-2051","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Pump-Jet Propulsion - TES Group<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/research.dii.unipd.it\/tes\/pump-jet-propulsion\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pump-Jet Propulsion - TES Group\" \/>\n<meta property=\"og:description\" content=\"Research activities Experimental test on Pumps-Jet Propulsion with different geometry Numerical simulation with SST and LES turbulence models Projects Pump-jet, which is generally and widely adopted on underwater vehicle for application from deep sea exploration to mine clearing, consists of rotor, stator and duct, with the properties of high critical speed, high propulsion efficiency, great&hellip; Read more\" \/>\n<meta property=\"og:url\" content=\"https:\/\/research.dii.unipd.it\/tes\/pump-jet-propulsion\/\" \/>\n<meta property=\"og:site_name\" content=\"TES Group\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/TESgroupUnipd\/\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-11T13:46:32+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/research.dii.unipd.it\/tes\/wp-content\/uploads\/sites\/15\/2022\/05\/Pumpjet-propulsor-computational-model_W640-1-300x225.jpg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@tes_group_unipd\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/research.dii.unipd.it\\\/tes\\\/pump-jet-propulsion\\\/\",\"url\":\"https:\\\/\\\/research.dii.unipd.it\\\/tes\\\/pump-jet-propulsion\\\/\",\"name\":\"Pump-Jet Propulsion - TES Group\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/research.dii.unipd.it\\\/tes\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/research.dii.unipd.it\\\/tes\\\/pump-jet-propulsion\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/research.dii.unipd.it\\\/tes\\\/pump-jet-propulsion\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/research.dii.unipd.it\\\/tes\\\/wp-content\\\/uploads\\\/sites\\\/15\\\/2022\\\/05\\\/Pumpjet-propulsor-computational-model_W640-1-300x225.jpg\",\"datePublished\":\"2022-05-03T13:18:28+00:00\",\"dateModified\":\"2026-04-11T13:46:32+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/research.dii.unipd.it\\\/tes\\\/pump-jet-propulsion\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/research.dii.unipd.it\\\/tes\\\/pump-jet-propulsion\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/research.dii.unipd.it\\\/tes\\\/pump-jet-propulsion\\\/#primaryimage\",\"url\":\"https:\\\/\\\/research.dii.unipd.it\\\/tes\\\/wp-content\\\/uploads\\\/sites\\\/15\\\/2022\\\/05\\\/Pumpjet-propulsor-computational-model_W640-1.jpg\",\"contentUrl\":\"https:\\\/\\\/research.dii.unipd.it\\\/tes\\\/wp-content\\\/uploads\\\/sites\\\/15\\\/2022\\\/05\\\/Pumpjet-propulsor-computational-model_W640-1.jpg\",\"width\":311,\"height\":233},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/research.dii.unipd.it\\\/tes\\\/pump-jet-propulsion\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/research.dii.unipd.it\\\/tes\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Pump-Jet Propulsion\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/research.dii.unipd.it\\\/tes\\\/#website\",\"url\":\"https:\\\/\\\/research.dii.unipd.it\\\/tes\\\/\",\"name\":\"TES Group\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/research.dii.unipd.it\\\/tes\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/research.dii.unipd.it\\\/tes\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/research.dii.unipd.it\\\/tes\\\/#organization\",\"name\":\"TES Group - University of Padova\",\"url\":\"https:\\\/\\\/research.dii.unipd.it\\\/tes\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/research.dii.unipd.it\\\/tes\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/research.dii.unipd.it\\\/tes\\\/wp-content\\\/uploads\\\/sites\\\/15\\\/2019\\\/05\\\/TES_02-320_320.jpg\",\"contentUrl\":\"https:\\\/\\\/research.dii.unipd.it\\\/tes\\\/wp-content\\\/uploads\\\/sites\\\/15\\\/2019\\\/05\\\/TES_02-320_320.jpg\",\"width\":320,\"height\":320,\"caption\":\"TES Group - University of Padova\"},\"image\":{\"@id\":\"https:\\\/\\\/research.dii.unipd.it\\\/tes\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/TESgroupUnipd\\\/\",\"https:\\\/\\\/x.com\\\/tes_group_unipd\",\"https:\\\/\\\/www.linkedin.com\\\/company\\\/tes-turbomachinery-and-energy-systems-group-unipd\\\/\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Pump-Jet Propulsion - TES Group","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/research.dii.unipd.it\/tes\/pump-jet-propulsion\/","og_locale":"en_US","og_type":"article","og_title":"Pump-Jet Propulsion - TES Group","og_description":"Research activities Experimental test on Pumps-Jet Propulsion with different geometry Numerical simulation with SST and LES turbulence models Projects Pump-jet, which is generally and widely adopted on underwater vehicle for application from deep sea exploration to mine clearing, consists of rotor, stator and duct, with the properties of high critical speed, high propulsion efficiency, great&hellip; Read more","og_url":"https:\/\/research.dii.unipd.it\/tes\/pump-jet-propulsion\/","og_site_name":"TES Group","article_publisher":"https:\/\/www.facebook.com\/TESgroupUnipd\/","article_modified_time":"2026-04-11T13:46:32+00:00","og_image":[{"url":"https:\/\/research.dii.unipd.it\/tes\/wp-content\/uploads\/sites\/15\/2022\/05\/Pumpjet-propulsor-computational-model_W640-1-300x225.jpg","type":"","width":"","height":""}],"twitter_card":"summary_large_image","twitter_site":"@tes_group_unipd","twitter_misc":{"Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/research.dii.unipd.it\/tes\/pump-jet-propulsion\/","url":"https:\/\/research.dii.unipd.it\/tes\/pump-jet-propulsion\/","name":"Pump-Jet Propulsion - TES Group","isPartOf":{"@id":"https:\/\/research.dii.unipd.it\/tes\/#website"},"primaryImageOfPage":{"@id":"https:\/\/research.dii.unipd.it\/tes\/pump-jet-propulsion\/#primaryimage"},"image":{"@id":"https:\/\/research.dii.unipd.it\/tes\/pump-jet-propulsion\/#primaryimage"},"thumbnailUrl":"https:\/\/research.dii.unipd.it\/tes\/wp-content\/uploads\/sites\/15\/2022\/05\/Pumpjet-propulsor-computational-model_W640-1-300x225.jpg","datePublished":"2022-05-03T13:18:28+00:00","dateModified":"2026-04-11T13:46:32+00:00","breadcrumb":{"@id":"https:\/\/research.dii.unipd.it\/tes\/pump-jet-propulsion\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/research.dii.unipd.it\/tes\/pump-jet-propulsion\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/research.dii.unipd.it\/tes\/pump-jet-propulsion\/#primaryimage","url":"https:\/\/research.dii.unipd.it\/tes\/wp-content\/uploads\/sites\/15\/2022\/05\/Pumpjet-propulsor-computational-model_W640-1.jpg","contentUrl":"https:\/\/research.dii.unipd.it\/tes\/wp-content\/uploads\/sites\/15\/2022\/05\/Pumpjet-propulsor-computational-model_W640-1.jpg","width":311,"height":233},{"@type":"BreadcrumbList","@id":"https:\/\/research.dii.unipd.it\/tes\/pump-jet-propulsion\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/research.dii.unipd.it\/tes\/"},{"@type":"ListItem","position":2,"name":"Pump-Jet Propulsion"}]},{"@type":"WebSite","@id":"https:\/\/research.dii.unipd.it\/tes\/#website","url":"https:\/\/research.dii.unipd.it\/tes\/","name":"TES Group","description":"","publisher":{"@id":"https:\/\/research.dii.unipd.it\/tes\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/research.dii.unipd.it\/tes\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/research.dii.unipd.it\/tes\/#organization","name":"TES Group - University of Padova","url":"https:\/\/research.dii.unipd.it\/tes\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/research.dii.unipd.it\/tes\/#\/schema\/logo\/image\/","url":"https:\/\/research.dii.unipd.it\/tes\/wp-content\/uploads\/sites\/15\/2019\/05\/TES_02-320_320.jpg","contentUrl":"https:\/\/research.dii.unipd.it\/tes\/wp-content\/uploads\/sites\/15\/2019\/05\/TES_02-320_320.jpg","width":320,"height":320,"caption":"TES Group - University of Padova"},"image":{"@id":"https:\/\/research.dii.unipd.it\/tes\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/TESgroupUnipd\/","https:\/\/x.com\/tes_group_unipd","https:\/\/www.linkedin.com\/company\/tes-turbomachinery-and-energy-systems-group-unipd\/"]}]}},"acf":[],"_links":{"self":[{"href":"https:\/\/research.dii.unipd.it\/tes\/wp-json\/wp\/v2\/pages\/2051","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/research.dii.unipd.it\/tes\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/research.dii.unipd.it\/tes\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/research.dii.unipd.it\/tes\/wp-json\/wp\/v2\/users\/30"}],"replies":[{"embeddable":true,"href":"https:\/\/research.dii.unipd.it\/tes\/wp-json\/wp\/v2\/comments?post=2051"}],"version-history":[{"count":20,"href":"https:\/\/research.dii.unipd.it\/tes\/wp-json\/wp\/v2\/pages\/2051\/revisions"}],"predecessor-version":[{"id":2056,"href":"https:\/\/research.dii.unipd.it\/tes\/wp-json\/wp\/v2\/pages\/2051\/revisions\/2056"}],"wp:attachment":[{"href":"https:\/\/research.dii.unipd.it\/tes\/wp-json\/wp\/v2\/media?parent=2051"}],"wp:term":[{"taxonomy":"folder","embeddable":true,"href":"https:\/\/research.dii.unipd.it\/tes\/wp-json\/wp\/v2\/folder?post=2051"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}