Abstract
Through the analysis of properties of unsteady thermal response of ceramic thermal protection structure: low thermal conductivity and Bi ＞100, the coupling effect between air and solid is assumed to be ignored. Besides, the surface temperature of solid is considered to be the same with the fluid temperature, and then according to these conditions, an uncoupled approach was brought forward to solve the unsteady thermal response of structure by using the first kind boundary condition. Compared with the results of tight coupled method for the problem of a two&dimensional cylinder with hypersonic flow, this new uncoupled approach not only has high accuracy in the results of thermal response and temperature distribution, but also save much computing time and meet the practical demand for the design of structure thickness and prediction of aerodynamic heating, which shows this method has a great value in the engineering application.
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