高压工质冲击下压缩机吸气阀紊动射流形态模拟  

Shape simulation of turbulent jet of compressor’s suction valve with high-pressure working medium impact

作　　者：梁晓瑜 毛君[2] 王鑫[2] LIANG Xiao-yu;MAO Jun;WANG Xin(College of Mechanical Engineering,Liaoning Technical University,Fuxin 123000;Research Institute of Technology and Equipment for the Exploitation and Utilization of Mineral Resources,Liaoning Technical University,Fuxin 123000)

机构地区：[1]辽宁工程技术大学机械工程学院,辽宁阜新123000 [2]辽宁工程技术大学矿产资源开发利用技术及装备研究院,辽宁阜新123000

出　　处：《机械设计》2022年第2期18-23,共6页Journal of Machine Design

基　　金：辽宁省教育厅资助项目(LJ2019QL018);阜新市军民融合资助项目(18-Z03);辽宁工程技术大学学科创新团队资助项目(LNTU20TD-02)。

摘　　要：为研究线性压缩机吸气阀射流形态,分析了吸气阀的结构特征及工作原理,计算了吸气阀入口流速,确定了吸气阀的射流形式,并基于RNG k-ε模型构建线性压缩机阀片的紊动射流模型,并采用Fluent对线性压缩机吸气阀射流过程进行模拟仿真,分析不同入口流速状态下吸气阀流场特性。仿真结果表明:射流冲击阀片后,射流与壁面分离,在活塞腔的中心位置出现对称旋涡,随着入口速度的增加,整个流场内的流速都在增大,旋涡不稳定性的影响比重逐渐增强。In this article,in order to study the jet shape of the linear compressor’s suction valve,the analysis is conducted on its structure and working principle.The inlet velocity of the suction valve is calculated,the jet form is worked out.Based on the RNG k-ε model,the turbulent jet model of the linear compressor’s valve plate is constructed;the jet process of the linear compressor’s suction valve is simulated by means of Fluent;the flow-field characteristics of the suction valve at different inlet flow rates are explored.The simulation results show that the jet is separated from the wall after it impinges on the valve plate,and the symmetrical vortex appears in the center of the piston cavity.With the ever-increasing inlet velocity,the flow rate in the whole flow field increases,and influence of vortex instability increases gradually.

关 键 词：线性压缩机 吸气阀 射流 流场仿真 

分 类 号：TP45[自动化与计算机技术]