Hydrodynamic simulation for intake valve of reciprocating compressor

摘要

The aim of the present paper is to simulate the work process of intake valve in reciprocating compressor. To understand the flow, temperature characters and valve plate movement, the Computational Fluid Dynamics (CFD) is used to simulate the process of expansion and suction. In each time step, the fluid motion equation is iteratively solved to obtain the pressure distribution on the valve plate, and the valve plate moving can been determined by solving the valve plate motion equation at the end of time step. The simulation result shows the pressure and temperature field is uniform in cylinder during compressor expansion, but very different in suction process. The valve plate opens from 53.2° to 219.5°, which is well consistent with the theoretical calculation results (56°,220°). This study identifies that CFD is a valid tool for exactly investigating the flow and valve plate movement.