基于CFD的中冷器气室结构优化设计

为了提高汽车中冷器的工作性能及效率,基于计算流体动力学(computational fluid dynamics,CFD)方法,针对芯体相同、气室结构不同的2种中冷器内部气体流场进行三维仿真分析,研究气室结构差异对中冷器工作性能及效率的影响。仿真计算和对比分析表明,中冷器气室是整个中冷器压力损失的重要部件,内部气体流动情况对其散热性能有直接影响。仿真结果表明:由于100-3型中冷器气室具有侧壁倾角,气体流动过程中压降较小,出口速度较100-2型高,整体流动性能较100-2型中冷器好。

Optimal Design of the Structure Optimization on the Air Chamber of Intercooler Based on CFD

In order to improve the working performance and efficiency of the intercooler, the computational fluid dynamics ( CFD) method was used to calculate and analyze flow field for two different types of the intercooler with different gas chambers. And the effects of different gas chambers on the performance and efficiency of the intercooler were also investigated. It can be found that the main pressure loss of the intercooler comes from the air chamber, and the internal gas flow directly affects the heat dissipation of the intercooler.According to the simulation results, the 100-3 type intercooler with side wall inclination angle shows lower pressure loss, and the outlet velocity of the 100-3 intercooler is higher than that of 100-2. So the overall flow performance of the 100-3 intercoolter is better than that of 100-2.