空调客车车体顶部弓形封闭空腔自然对流换热研究  

Research on Natural Convection Heat Transfer in Bow-Shaped Enclosed Space on the Top of Air-Conditioned Passenger Train Body

作　　者：罗成宝 王运时[1] 

机构地区：[1]西南交通大学机械工程二系

出　　处：《西南交通大学学报》1993年第4期48-53,共6页Journal of Southwest Jiaotong University

摘　　要：本文应用自然对流换热理论和数值计算方法,对空调客车车体顶部弓形封闭空腔自然对流换热规律进行了模型研究,用数值方法求出了空腔当量导热系数,同时用差分干涉仪对同尺寸模型进行了实测,两者结果取得了较好的一致。The theorem of heat transfer by natural convection and the numerical method are used to research the patterns of heat transfer by natural convection in bow-shaped enclosed space on the top of an air-conditioned passenger train body. The equivalent thermal conductivity of the enclosed space is obtained with a numerical method and the difference interferometer is utilized to survey the temperature field in a model of same size. The results of both methods agree well.

关 键 词：客车 车顶 空气调节 自然对流换热 

分 类 号：U271.038.3[机械工程—车辆工程]