基于CLES模型的风扇气动噪声数值模拟分析方法  

Numerical Simulation Analysis Method of Fan Aerodynamic Noise Based on CLES Model

作　　者：袁磊 冉均均 YUAN Lei;RAN Junjun(Department of Nuclear Engineering and New Energy Technology,The Engineering&Technical College of Chengdu University of Technology,Leshan 614000,China)

机构地区：[1]成都理工大学工程技术学院,核工程与新能源技术系,四川乐山614000

出　　处：《微型电脑应用》2022年第5期57-61,共5页Microcomputer Applications

基　　金：成都理工大学工程技术学院青年科学基金项目(C122016013)。

摘　　要：为了获取风扇气动噪声特性,提出一种基于CLES模型的风扇气动噪声数值模拟分析方法。其简化了风扇几何模型,构建风扇气动噪声数值模拟分析模型的计算域:出口风道、管道衔接区、旋转流体区、进口风道。基于CLES模型处理换热器,对数值模拟分析模型的网格实施精细划分,在ICEM中导入风扇三维模型,实施气动噪声数值模拟分析模型的建模。设置数值模拟分析模型的边界条件,实施气动噪声数值模拟分析,计算稳态模拟,等流场稳定时进一步计算瞬态模拟。测试结果证明,设计方法的噪声特征捕捉性能良好,提升级间流场扰动模拟度,通过该方法能够获得重要的定性与定量分析信息。In order to obtain the characteristics of fan aerodynamic noise,a numerical simulation analysis method of fan aerodynamic noise based on CLES model is proposed.The geometric model of fan is simplified,and the computational domain of numerical simulation analysis model of fan aerodynamic noise is constructed:outlet air duct,pipe joint area,rotating fluid area and inlet air duct.Heat exchanger is treated based on CLES model.The grid of numerical simulation analysis model is finely divided,the fan 3D model is imported into ICEM,and the aerodynamic noise numerical simulation analysis model is modeled.We also set the boundary conditions of numerical simulation analysis model,implement numerical simulation analysis of aerodynamic noise,calculate steady-state simulation,and further calculate transient simulation when the flow field is stable.The test results show that the noise feature capture performance of the design method is good,and the simulation degree of interstage flow field disturbance is improved.The important qualitative and quantitative analysis information can be obtained by this method.

关 键 词：CLES模型 旋转流体区 风扇气动噪声 数值模拟分析 

分 类 号：TH432.1[机械工程—机械制造及自动化]