A study on the transient numerical simulation of diaphragm over valve

By using Computational Fluid Dynamics(CFD),the working process of diaphragm over valve is transiently simulated,and the technique of dynamic mesh in the CFD transient analysis is analyzed.In order to make the computer model adaptive,relevant dynamic meshes which are created or suspender according to the move of valve clack are adopted to update the CFD model in every time step.Compared with the experiment data,the simulation data shows the CFD simulation is feasible in prediction and analysis on the performance of diaphragm over valve,which also indicates that CFD can be a strong tool for us to study the hydrodynamic characteristics of diagphragm over valve.