太阳辐射下汽车仪表板热负荷的数值模拟与实验研究  

Numerical Simulation and Experimental Study on the Thermal Load of Vehicle Dashboard Under Solar Radiation

作　　者：陈吉清[1,2] 李丽芬[1] 兰凤崇[1,2] 揭敢新 

机构地区：[1]华南理工大学机械与汽车工程学院,广州510641 [2]广东省汽车工程重点实验室,广州510641 [3]中国电器科学研究院工业产品环境适应性国家重点实验室,广州510300

出　　处：《汽车工程》2015年第12期1459-1466,共8页Automotive Engineering

基　　金：工业产品环境适应性国家重点实验室开放基金;国家自然科学基金(51375170)资助

摘　　要：为降低太阳辐射下仪表板的热负荷,基于热平衡方程,对在海南夏季天气条件下汽车的换热过程进行数值模拟,所算得的车内温度场与实验结果很好吻合。在此基础上,分析了不同传热方式等因素对仪表板温度场的影响。结果表明,辐射和传导是仪表板温度场的主要影响因素;减小前车窗玻璃透射率、放置遮阳挡、合理增加仪表板导热系数和选择适当的停车位置都能显著降低仪表板的热负荷。For reducing the thermal load of vehicle dashboard,a numerical simulation on the heat transfer process of vehicle is carried out under the summer weather condition in Hainan based on heat balance equation,with an interior temperature field obtained well agreeing with experimental results.Based on this,the effects of different heat transfer modes and other factors on the temperature field of dashboard are analyzed.The results indicate that the radiation and conduction are the main factors affecting the temperature field of dashboard.Reducing the transmittance of front windshield,putting on sun visor,reasonably increasing the thermal conductivity coefficient of dashboard and selecting appropriate parking place can significantly reduce the thermal load of dashboard.

关 键 词：汽车仪表板 热负荷 太阳辐射 导热系数 

分 类 号：U463.8[机械工程—车辆工程]