摘要
利用CFD分析软件ANSYS Fluent对不同空气进口速度工况下的汽车中冷器的冷侧百叶窗翅片的局部模型进行三维仿真计算,获取多孔介质模型仿真所需的黏性及惯性阻力系数。通过多孔介质模型代替散热带计算整体中冷器的温度场及压力场,研究不同开窗角度对整体中冷器流动换热的影响。通过比较综合评价因子发现,开窗角度为23°时,中冷器出口温度最低,中冷器的换热性能最好。三维模拟的模拟值与风洞试验值在一定的误差范围内,验证了多孔介质模型的可行性。这为研究中冷器结构优化设计提供了有效的办法。
It uses theCFD analysis software ANSYS Fluent to carry out 3D simulation calculation for the local model of the cold side louver fin of the automobile intercooler under different air inlet velocity conditions.The author obtained the viscosity and inertia resistance coefficient required by porous medium model simulation.Porous medium model is used to calculated the temperature field and pressure field of the whole intercooler to study the influence of different opening angle on the flow and heat transfer of the integral intercooler.By comparing the comprehensive evaluation factors,it is found that the outlet temperature of the intercooler is the lowest and the heat transfer performance of the intercooler is the best when the opening angle is 23°.And the simulation value of 3D simulation and wind tunnel test value verify the feasibility of porous media model within a certain error range.This provides an effective way to study the structure optimization design of intercooler.
作者
郑明强
冯理
蒋婷婷
梁勇
ZHENG Ming-qiang;FENG Li;JIANG Ting-ting;LIANG Yong(Guizhou College of Electronic Science and Technology,Guizhou Guiyang 550025,China;Wuhan Huaxia University of Technology,Hubei Wuhan 430223,China)
出处
《机械设计与制造》
北大核心
2022年第8期208-212,共5页
Machinery Design & Manufacture
基金
湖北省教育厅科学技术研究计划指导性项目(B2017393)。
关键词
流动换热
多孔介质
风洞试验
结构优化
Flow Heat Transfer
Porous Medium
Wind Tunnel Test
Structural Optimization
