Abstract: There is an obvious phenomenon of fluid-structure interaction in the operating procedure of suction valve group of reciprocating compressor, but the phenomenon of fluid-structure interaction is frequently ignored in the existing numerical simulation model of fixed valve opening. The numerical simulation model considering fluid-structure interaction phenomenon is difficult to obtain sufficient sound source information due to neglecting the influence of piston and valve plate. In this paper, a numerical simulation model of fluid-structure interaction which involves the influence of piston and valve plate is established to investigate the aerodynamic noise characteristics of the suction valve group, and the motion, flow field and acoustic field characteristics obtained by the model are compared with those by other models. The numerical results show that the fluid-structure interaction model can describe accurately the working process of the suction valve group and obtain more abundant sound source information. Additionally, the influence of flow section parameters on the aerodynamic noise of suction valve group is analyzed and the section parameters are optimized based on the established numerical simulation model of fluid-structure interaction.
Keywords: reciprocating compressor; suction valve group; fluid-structure interaction; aerodynamic noise; numerical simulation
合肥工业大学学报自科版