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针对类乘波体防热壁板,采用松耦合算法推进气动热和传热迭代计算,研究气动加热-温度场的耦合特性.结果表明:在壁板达到辐射平衡前,冷壁热流和辐射平衡热流与真实气动加热的误差分别达+55.1%和-15.4%以上,必须将气动加热和温度场进行耦合分析;当地绝热壁面温度不随时间变化,表面传热系数是耦合效应的关键参数;采用平均表面传热系数进行瞬态气动加热-温度场耦合计算只进行2次气动加热计算,壁面温度预测误差在2.5%以内,可有效提高气动加热-温度场耦合计算的效率.
Aiming at the wave-block-type heat-proof panel, the loosely coupled algorithm is used to promote the iterative calculation of the aerodynamic heat and heat transfer, and the coupling characteristics of the aerodynamic heating-temperature field are studied. The results show that before the panel reaches the radiation balance, The error between the heat flow and the real aerodynamic heating is respectively + 55.1% and -15.4%, the aerodynamic heating and the temperature field must be coupled and analyzed; the local adiabatic wall temperature does not change with time; the surface heat transfer coefficient is the key parameter of the coupling effect; Surface heat transfer coefficient of transient aerodynamic heating - temperature field coupling calculation is only 2 times of aerodynamic heating calculation, wall temperature prediction error of 2.5% or less, which can effectively improve the aerodynamic heating - temperature field coupling calculation efficiency.