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-  2018 

基于CFD的某型号空滤器数值模拟及结构改进 Numerical simulation and structure improvement of a certain type air filter based on CFD

Keywords: 空气滤清器,数值模拟,结构改进,阻力损失,流动均匀性

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Abstract:

应用Fluent流体力学计算软件,采用标准k-ε湍流模型和标准壁面函数对空气滤清器的内部湍流流场进行三维仿真计算,其中滤芯部分采用多孔介质模型.经计算,得到在不同入口流量下的仿真结果,结果与实验数据基本一致,具有工程指导意义.为提高空气滤清器的流动均匀性,降低阻力损失,分别从进气管入口位置调整,排气管结构优化和滤网的改进3个方面提出改进方案.对比各改进方案,得出了进气管入口位置左移16mm,排气管端部弯道的直拐角改为圆滑拐角、滤纸的孔目数选择1 000目的最终改进方案,此方案进出口静压差减小约13%,滤芯入口截面流动的均匀性也得到了提高

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