轿车空调车室内流动换热计算

Simulation of Flow Field and Heat Transfer in Passenger Compartment

摘要:

对包含人体的3维空调车室内部空气流动的速度分布和温度分布进行了数值计算.采用集总参数法建立人体模型,将该模型计算出的人体表面温度作为CFD(computational fluid dynamics)计算的边界条件,从而更细致地考虑了散热量在人体表面的分布情况.CFD计算采用六面体网格、SIMPLE算法,考虑了自然对流换热和固体壁面间的辐射,应用整体求解法计算车内传热问题.针对一款实车的试验,证明了计算的准确性.

Abstract:

The thermal environment in a vehicle cabin with passengers is simulated.Boundary temperatures for computational fluid dynamics (CFD) calculation are provided by numerical human model created with lumped-heat-capacity method.In the CFD simulation,hexahedral mesh and SIMPLE algorithm is applied.Natural convection and wall radiation are taken into consideration.An experiment on a real car is executed to validate the simulation.