Numerical simulation of centrifugal pump power-off transition process and flyaway transition process.
Experimental tests on PAT in both pump and turbine mode.
Time-frequency, wavelet analysis and Omega vortex method will be used to study the pressure pulsation characteristics of PAT to identify both strong and weak vortex structures
In order to reduce greenhouse gas emissions, countries around the world have been developing hydropower as a mature renewable energy technology. At the same time, small hydropower stations have become a focus of attention due to their environmental friendliness, low operating costs, and low reservoir costs. In practical applications, pumps as turbines (PAT) are widely used to reduce equipment costs. Among pumps with different specific speeds, centrifugal pumps return on investment due to the wider ranger of flow rate, lower manufacturing cost and easier maintenance. The purpose of this study is to capture the morphology of vortices and unsteadyness using FFT, Wavelet and Omega vortex identification technique at part load, Shut-Down process and runaway transition.
Facility – Pump Facility
Mesh Tools – ICEM
CFD Tools – ANSYS CFX
Post Processing Tools – Wavelet, Ω-method, ANSYS
- Chenying Zhang, Wen Jie Wang, Ji Pei and Shouqi Yuan (2021) Numerical simulation of unsteady flow characteristics in a centrifugal pump during runaway process caused by power failure, Journal of Physics: Conference Series, Volume 2217, 16th Asian International Conference on Fluid Machinery 13-15 September 2021; http://doi.org/10.1088/1742-6596/2217/1/012047