关键词: 热缩比, 相似性, 保持技术, 传热, 微重力

Abstract:

Through theoretical analysis and numerical verification, the temperature material Nusselt number preservation technique is further developed and extended to ground thermal scale modeling of conduction convection radiation heat transfer systems under micro gravity by the technique of wall heat flux modification. When the model size is properly reduced, the natural convection can be dramatically suppressed, and the similarity between the model and prototype in temperature and flow field can be obtained if Nusselt number is preserved.

Key words: thermal scale modeling, similitude, preservation technique, heat transfer, microgr avity