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中文摘要：
采用能量平衡方程和两热流密度近似法建立了金属热防护系统多层隔热材料的稳态传热的数学模型，并利用测量多层隔热材料单元的有效导热系数的实验和遗传算法对纤维隔热材料的辐射衰减系数和隔热屏表面辐射发射系数这两个热物参数进行了优化，最后用实验测得的多层隔热材料的有效导热系数验证了采用优化后参数的多层隔热材料的稳态传热模型的正确性。
英文摘要：
Combined energy equilibrium equation and two th methods were used to establish the steady heat transfer mathemati thermal insulations in the metallic thermal insulations and emissivity rithm and experiment that measure , China） ermal flux approximation c model of the multi-layer protection system. Radiation attenuation index of fibrous of heat insulation screen were optimized by genetic algod the effective conductivity of the multilayer thermal insulation element. The experimentally measured effective conductivity data of the multi-layer thermal insulations validate steady heat transfer model of the multi-layer thermal insulations, which adopt optimized thermal physical parameters.
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