球形浮空器升空过程中的瞬态热响应  

TRANSIENT THERMAL RESPONSE OF SPHERICAL AEROSTATS IN RISING PROCESS

作　　者：李德富[1] 夏新林[1] 杨小川[1] 

机构地区：[1]哈尔滨工业大学能源科学与工程学院,黑龙江哈尔滨150001

出　　处：《工程热物理学报》2009年第1期108-110,共3页Journal of Engineering Thermophysics

基　　金：国家自然科学基金项目(No.50476029);基础科研项目(No.A2320061290)

摘　　要：通过建立平流层浮空器的热模型,对球形浮空器升空过程中的瞬态热响应进行了数值模拟。模型中考虑了太阳直接辐射、散射辐射、地球反照辐射和地-气红外辐射等外部辐射热流,并考虑了浮空器外部和内部的对流换热。通过计算获得了球形浮空器升空过程中的瞬态热响应规律。研究结果表明,升空过程中,球形浮空器壳体温度场存在很大的瞬态不均匀性。In this paper, thermal models for stratospheric aerostats were established. Transient thermal response of a spherical aerostat in rising process was studied based on this model. In the model, the following radiative heat fluxes on the external hull were considered： the direct solar radiation, the diffuse solar radiation, the reflected solar radiation, the infrared radiation of the earth and that of the atmosphere. In addition, the model included the convective heat transfer inside and outside the aerostat. By numerical simulation, transient thermal response of the spherical aerostat in rising process was presented. The results show that the hull temperature distribution of spherical aerostats is non-uniform and varies with time complexly.

关 键 词：球形浮空器 热模型 瞬态热响应 数值模拟 

分 类 号：TK124[动力工程及工程热物理—工程热物理]