摘要
为了给载人航天器热设计提供依据，考核热控系统的适应能力以及确定热湿控制参数。发展了材料－温度－湿度保持技术，以实现微重力条件下导热－对流－辐射换热与传质稳态系统的地面相似模拟。通过调整壁面热流密度分布，可以使尺寸适当缩小后的模型的材料、温度和湿度同时保持不变，同时还能抑制由重力引起的自然对流的作用，从而实现地面模型与微重力场中原型流动、换热和传质相似。并用数值方法对均匀进风条件下的流动、换热和传质的相似性进行了验证。
A materialtemperaturehumidity preservation technique is proposed to ground thermal scale modeling of conductionconvectionradiationmass diffusion system under microgravity in order to provide reliable bases for the thermal design of space station. When the model size was properly reduced, the natural convection can be dramatically suppressed and the material, temperature and humidity can be preserved simultaneously by modifying wall heat flux. The similarity between the model and the prototype in temperature, humidity and flow field of the space station can be obtained on the ground with this preservation technique. The numerical simulation of this technique is presented for the case with uniform inlet ventilation.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
1998年第7期90-93,共4页
Journal of Tsinghua University(Science and Technology)
基金
国家自然科学基金
国家"八六三"高技术项目
关键词
载人航天器
传热传质
地面模拟
微重力
对流
hermal scale modeling
similarity
preservation technique
mircogravity
mass transfer
convection
radiation
conduction
