Numerical simulation of plunger valve of colliding energy dissipation in the condition of low backpressure and high pressure difference

Asian Working Group- IAHR's Symposium on Hydraulic Machinery and Systems

Wang, Y.C.^1,2 ; Li, C.^3 ; Jiang, J.^1,2 ; Zhang, S.S.^1,2 ; Li, Y.H.^1,2 ; Ying, R.^1,2

School of Power and Mechanical Engineering, Wuhan University, Wuhan

430072, China^1

Key Lab of Hydraulic Machinery Transient, MOE, Wuhan University, Wuhan

430072, China^2

Hubei Agricultural Valley Industrial Shares Co., LTD, Jingmen

448000, China^3

关键词: Cavitation model;    Cavitation phenomenon;    Control equations;    Different structure;    Noise and vibration;    Numerical simulation studies;    Operation conditions;    Pipe-line systems;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/163/1/012096/pdf
DOI  :  10.1088/1755-1315/163/1/012096

来源: IOP

【 摘 要 】

The plunger valve of colliding energy dissipation is one of the important parts in pipeline system. In the operation condition of low backpressure and high pressure difference, cavitation phenomenon is easy to come into being, which may result in noise and vibration and even lead to damage to valve. This article aims to decrease and even eliminate the cavitation phenomenon in plunger valve which may occur in this operation condition. Mathematical models including basic control equation, standard k- model, equation model of fluid, cavitation model and so on, are used to calculate flow field. Then, the physical model of plunger valve of colliding energy dissipation is built and numerical simulation study on valve's inside flow is conducted in using software on the view of hydraulics. The physical model of plunger valve is built by using Pro/E, ICEM CFD and finally simulation is carried out by using Pumplinx software. Two calculations are performed in this study. One is calculation of monolayer plunger valve and another is double plunger valve in different fluid. The other calculation of double plunger valve under the condition that different structures and different fluids are carried out.