应用整体求解法计算气固耦合传热问题，并考虑了太阳辐射和壁面间热辐射对速度场和温度场的影响，对某款轿车车内三维流场和热环境进行了数值仿真，得到了速度场、温度场和PMV与PPD的分布。仿真结果与试验数据很接近，相差在5%以内。接着对乘员热舒适性进行分析，并使用平均空气龄对舱内空气新鲜度进行评价。结果表明，在所设定的环境条件下，该轿车前排乘客感觉较热，后排乘客感觉微热，乘员舱空气新鲜度较好。据此，对模型进行修改并重新计算。结果显示，乘员舱的热舒适性得到了改善。%By applying integrated method to solve the gas-solid coupling heat transfer problem with consid-erations of the effects of solar radiation and wall-to-wall heat radiation on velocity field and temperature field, a nu-merical simulation on the interior 3D flow field and thermal environment of a car is conducted with its velocity field, temperature field and the distributions of PMV and PPD obtained, which are very close to the results of test per-formed with a relative error within 5%. Then the thermal comfort of occupants is analyzed with the air freshness in passenger compartment evaluated by the mean age of air. The results indicate that in the environmental conditions set, while the air freshness in passenger compartment is relatively good, front passengers feel hot and rear passen-gers feel slightly hot. Accordingly the model is modified and re-simulated, resulting in improvement in the thermal comfort of passenger compartment.
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