流体机械

2020, v.48;No.576(06) 20-24+88

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微型压缩机簧片阀三维流固耦合分析
Fluid Structure Interaction Analysis of Reed Valve for Micro-compressor

陈德祥;刘浩;耿茂飞;王乐;张成彦;
Chen Dexiang;Liu Hao;Geng Maofei;Wang Le;Zhang Chengyan;State Key Laboratory of Compressor Technology,Hefei General Machinery Research Institute Co.,Ltd.;

摘要(Abstract):

簧片阀具有结构简单、余隙容积小的优点,广泛用于微型压缩机上,它的运动与气体的流动互相影响。簧片阀结构对压缩机的效率、噪声有重要影响,其工作过程的准确模拟有助于在设计中提高压缩机的性能。采用一维方法进行模拟需要用到有效通流面积和有效作用力面积2个试验参数,且不能反映流动的细节。本文用三维流固耦合方法对某压缩机一级的工作过程进行了仿真,为模拟阀的开关过程,在阀片与阀座之间采用了0.2 mm厚的流体层,用间隙边界条件控制阀片开启与关闭。通过仿真得到了工作过程中的压力、速度、温度以及气阀的运动曲线。计算结果表明三维流固耦合方法可用于簧片阀的仿真模拟。
Reed type valve has the advantages of simple geometry and small clearance volume,and is widely used in micro-compressors.The movement of reed valve intensively coupled with flow passing through the valve,which has a significant influence on the efficiency and noise of the compressor.The structure of reed valve has important effect on compressor efficiency and noise,and accurate simulation of its working process is helpful to improvement of compressor performance in design.Traditionally,1D method is applied in valve simulation,which requires two experimental parameters,i.e.,the effective flow area and the effective force area.However,1D simulation cannot reflect detail about the flow passing through the valve.3D FSI (fluid structure interaction) method was used to simulate reed valve for first stage of a micro-compressor.In order to simulate the closing and opening process of the valve,a thin layer of fluid grid with 0.2 mm height was used between the valve plate and seat,and the valve opening and closing was controlled by the gap boundary condition.Through FSI simulation,the details of pressure,velocity,temperature distribution and movement curve of the valve in one cycle were obtained.The calculation results show that the 3D FSI method can be used for simulation of reed valves.

关键词(KeyWords): 簧片阀;三维流固耦合;间隙边界条件
reed valve;3D FSI;gap boundary conditions

Abstract:

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基金项目(Foundation): 安徽省自然科学基金项目(1708085ME128);; 合肥通用机械研究院有限公司博士基金项目(2017010480)

作者(Author): 陈德祥;刘浩;耿茂飞;王乐;张成彦;
Chen Dexiang;Liu Hao;Geng Maofei;Wang Le;Zhang Chengyan;State Key Laboratory of Compressor Technology,Hefei General Machinery Research Institute Co.,Ltd.;

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