Numerical Analysis for Causes of Cavitation Fracture Working Condition on Centrifugal Pump

WANG Xiuli; YUAN Shouqi; ZHU Rongsheng; YU Zhijun

Volume 33 Issue 6

Mar. 2025

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Article Navigation > Nuclear Power Engineering > 2012 > 33(6): 101-104,114

WANG Xiuli, YUAN Shouqi, ZHU Rongsheng, YU Zhijun. Numerical Analysis for Causes of Cavitation Fracture Working Condition on Centrifugal Pump[J]. Nuclear Power Engineering, 2012, 33(6): 101-104,114.

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WANG Xiuli, YUAN Shouqi, ZHU Rongsheng, YU Zhijun. Numerical Analysis for Causes of Cavitation Fracture Working Condition on Centrifugal Pump[J]. Nuclear Power Engineering, 2012, 33(6): 101-104,114.

WANG Xiuli, YUAN Shouqi, ZHU Rongsheng, YU Zhijun. Numerical Analysis for Causes of Cavitation Fracture Working Condition on Centrifugal Pump[J]. Nuclear Power Engineering, 2012, 33(6): 101-104,114.

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Numerical Analysis for Causes of Cavitation Fracture Working Condition on Centrifugal Pump

1. Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang, Jiangsu, 212013, China;
2. Jiangsu Zhenhua Pump Manufacturing Co. Ltd., Taizhou, Jiangsu, 225500, China

Received Date: 2011-08-08
Rev Recd Date: 2012-08-02

Available Online: 2025-03-08

Abstract

Abstract

In order to research the flow-head curve plunge caused by the cavitation of centrifugal pump,the standard k-ε turbulence model,homogeneous multiphase model and Rayleigh-Plesset equation were applied to simulate the cavitation characteristics in a centrifugal pump with specific speed of 59 under different conditions based on ANSYS CFX software.The results show that the numerical simulation result has the same trend with experiment result,and absolute error is 0.02%.The analysis of flow field shows that: the steep fall of flow-head curve is not only caused by the traditional cativation,but also mainly caused by the Vortex loss.As the empty bubble in the passageway increases to some degree,the liquid boundary layer separation happened,then vortex appears and vortex losses.While the vortex appears originally,it has an impact on the flow-head curve.When the bubble becomes more and the whole passageway is full of vortex,cavitation fault condition happens.It reveals the vapor-liquid tow-phase flow distribution within the centrifugal pump.
- Centrifugal pump,
- Cavitation,
- Fracture working condition,
- Numerical simulation

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