基于流固耦合的压缩机吸气阀组气动噪声研究  

Investigation on aerodynamic noise of suction valve group in compressor with fluid-structure interaction modeling

作　　者：孟凡森 张小正[1] MENG Fansen;ZHANG Xiaozheng(Institute of Sound and Vibration Research,Hefei University of Technology,Hefei 230009,China)

机构地区：[1]合肥工业大学噪声振动工程研究所,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2024年第1期33-40,共8页Journal of Hefei University of Technology：Natural Science

基　　金：国家自然科学基金资助项目(51875147)。

摘　　要：往复式压缩机吸气阀组工作过程存在明显的流固耦合现象,现有的固定阀片开度的数值仿真模型大多没有考虑流固耦合现象,而考虑流固耦合现象的数值仿真模型由于忽略了活塞和阀板的作用难以获取足够的声源信息。文章建立考虑活塞和阀板作用的流固耦合数值仿真模型,并与其他模型获得的运动、流场和声场特性进行对比,结果表明:所建立的流固耦合模型能够更准确地描述吸气阀组的工作过程,获得更丰富的声源信息;基于该流固耦合数值仿真模型开展通流截面参数对吸气阀组气动噪声的影响分析,并优化设计了截面参数。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.

关 键 词：往复式压缩机 吸气阀组 流固耦合 气动噪声 数值模拟 

分 类 号：TH457[机械工程—机械制造及自动化] TB535[理学—物理]