密封对汽车冷却模块性能影响的数值分析

Numerical simulation on effect of sealing on vehicle cooling module performance

为优化汽车前端设计,提高发动机舱散热性能,针对某乘用车发动机舱冷却性能提出冷却模块空气流量、格栅进气利用率和散热器实际散热量等3个评价参数,通过CFD软件对4种汽车前端进气冷却模块密封方案进行三维仿真计算,研究冷凝器、散热器与风扇罩之间的不同密封情况对3个评价参数的影响.研究结果表明,双密封方案是提高冷却模块性能的最佳方案.

To optimize the automobile front end design and improve the engine underhood heat dissipation performance, three evaluation parameters are proposed for the evaluation on an automobile underhood cooling performance, including air flow rate of cooling module, intake air utilization rate of grill and actual heat release of radiator. By CFD software, the 3D simulation are performed on four sealing schemes of front end cooling module to study the effect of different sealing among condenser, radiator and fan cover on the three evaluation parameters. The results indicate that the dual sealing scheme is the best for the improvement of cooling module performance.