汽车空调除霜风管内部优化设计及验证

Internal optimization design and verification of automobile air conditioning defrosting duct

以某在研卡车为研究对象进行联合仿真计算,对除霜风管性能及内流场风速进行研究,通过优化风管内部结构及格栅角度合理分配除霜风管内部流体流量,降低流体压降。对优化结果进行环模试验验证,结果表明,除霜区域A区流体速度不小于2 m/s的区域达到100%,A′区在95%以上,B区在85%以上,除霜风管各部分的压降优化率为6.1%~30.4%,优化效果显著。

Taking a truck as the research object,the joint simulation calculation is carried out to study the performance of defrosting duct and the wind speed of internal flow field.By optimizing the internal structure of the duct and grille angle,the fluid flow in the defrosting duct is reasonably distributed,and the fluid pressure drop is reduced.The optimization results are verified by the ring model test.The results show that the area where the fluid velocity is not less than 2 m/s in area A of the defrosting area reaches 100%,the area A'area is more than 95%,and the area B is more than 85%,and the pressure drop optimization rate of each part of the defrosting air duct is 6.1%~30.4%.The optimization effect is significant,which has a certain guiding significance for the defrosting performance of the vehicle.