RLV燃料贮箱低温泡沫隔热材料导热分析

Analysis of Thermal Conductivity for Cryogenic Foams on RLV Fuel Tank

针对RLV燃料贮箱使用的泡沫塑料,建立了闭孔匀质泡沫材料的传热模型,给出了利用泡沫材料结构参数计算热导率的方法。算例计算结果与实测值吻合较好,证明了模型的可信性和方法的可行性。最后利用对该模型的分析讨论了泡沫不均匀性的影响。

For foams on the RLV fuel tank ,a thermal model of closed-celled uniform foam was set up.A method to culculate thermal conductivity by configurable parameters was afforded. The correctness of the method was proved by the test result of the example. Then, the effect of the non-uniform cells in the foams by using analytical method is discussed.