浮空器对流换热系数的极限取值研究  

Study on the Limit Values of Convective Heat Transfer Coefficient in Aerostat

作　　者：刘四洋[1] 朱仁胜[1,2] 沈健[1] 

机构地区：[1]合肥工业大学机械与汽车工程学院,合肥230009 [2]滁州汽车与家电技术及装备研究院,安徽滁州239000

出　　处：《机械工程师》2016年第10期5-7,共3页Mechanical Engineer

基　　金：中航工业产学研专项项目(2013XKJH0004)

摘　　要：浮空器气囊蒙皮温度的改变,影响气囊与外界对流换热系数。对流换热系数的精确求解难度很大,不易实现。把风速温度作为定性温度来求解对流换热系数时会造成对流换热系数取值精确性低。文中提供一种对流换热系数的极限取值法,用于确定浮空器对流换热系数取值范围,一定程度上提高对流换热系数的精确性。The changes in the surface temperature of aerostat ballonet have an effect on the convective heat transfer coefficient between ballonet and atmospheric environment. Solving exact value of convective heat transfer coefficient is very difficult. The accuracy of convective heat transfer coefficient is very low when the wind temperature is characteristic temperature. This paper provides a method for solving the limit value of convective heat transfer coefficient, and determining the range of convective heat transfer coefficient. This method can improves accuracy of convective heat transfer coefficient.

关 键 词：浮空器 对流换热 极限取值 数值模拟 

分 类 号：V211.78[航空宇航科学与技术—航空宇航推进理论与工程]