Yu Lu
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Yu Lu has a total of 4 co-authors. Here are the top co-authors by number of shared publications:
- Fanjie Deng
National Research Center of Pumps, Jiangsu University, Zhenjiang 212013, China
1 shared publication - Fanjie Deng
National Research Centre of Pumps, Jiangsu University, Zhenjiang 212013, China
1 shared publication - Qiaorui Si
Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang 212013, China
1 shared publication - Shouqi Yuan
Research Center of Fluid Machinery Engineering and Technology, School of Physics and Electronic Engineering, Jiangsu University, Zhenjiang, China
1 shared publication
Latest Publications
- Open Access
- 11 November 2023
- Published by MDPI AG in International Journal of Turbomachinery, Propulsion and Power
- Vol. 8 (4) , 46
Unsteady Cavitation Analysis of the Centrifugal Pump Based on Entropy Production and Pressure Fluctuation
A numerical method using combined detached-eddy simulation (DES) and a cavitation model considering the rotation effect is used for unsteady cavitation flow field of the centrifugal pump. A closed-type pump test system was established to obtain the pump performance and pressure pulsation characteristics under different flow rates and cavitation condition, which provide boundary conditions and verification of calculations. Based on the calculation results of the unsteady flow field of the centrifugal pump cavitation, the entropy generation analysis of the flow field and an analysis of the pressure fluctuation characteristics were carried out. Then, we tried to reveal the relationship between cavitation and the deterioration of the centrifugal pump performance and the generation of the unstable operation excitation force. The internal energy loss is mainly concentrated in the impeller, volute, and pump cavity area, which accounts for more than 85% of the total entropy generation. The characteristic frequency of a Strouhal number of about 0.333 appears at the volute tongue due to the cavitation flow spread downstream.
- 11 November 2023
- Published by MDPI AG in International Journal of Turbomachinery, Propulsion and Power
- Vol. 8 (4) , 46
Open AccessUnsteady Cavitation Analysis of the Centrifugal Pump Based on Entropy Production and Pressure Fluctuation
A numerical method using combined detached-eddy simulation (DES) and a cavitation model considering the rotation effect is used for unsteady cavitation flow field of the centrifugal pump. A closed-type pump test system was established to obtain the pump performance and pressure pulsation characteristics under different flow rates and cavitation condition, which provide boundary conditions and verification of calculations. Based on the calculation results of the unsteady flow field of the centrifugal pump cavitation, the entropy generation analysis of the flow field and an analysis of the pressure fluctuation characteristics were carried out. Then, we tried to reveal the relationship between cavitation and the deterioration of the centrifugal pump performance and the generation of the unstable operation excitation force. The internal energy loss is mainly concentrated in the impeller, volute, and pump cavity area, which accounts for more than 85% of the total entropy generation. The characteristic frequency of a Strouhal number of about 0.333 appears at the volute tongue due to the cavitation flow spread downstream.