An overall ablation model of ethylene-propylene-diene monomer based on porous characteristics in char layer
An overall ablation model of ethylene-propylene-diene monomer based on porous characteristics in char layer
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DOI：
10.1177/1687814016632415
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发表时间：
2016-01
影响因子：
2.1
通讯作者：
Yang Liu;Sa Yang;G. He;Jiang Li
中科院分区：
文献类型：
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作者：
Yang Liu;Sa Yang;G. He;Jiang Li
本文提出了一种模拟三元乙丙橡胶绝热材料烧蚀过程的数值方法。通过分析三元乙丙橡胶在不同烧蚀环境中形成的炭层的性质，将其定义为一种不均匀多孔介质。采用多孔介质方程方法，建立了三元乙丙橡胶热化学烧蚀和颗粒冲蚀的综合模型。对一种三元乙丙材料在两台实验室固体火箭发动机上的烧蚀特性进行了6次计算，验证了整体烧蚀模型的所有子模型。
A numerical methodology has been developed to simulate the overall ablation process of the insulator material named ethylene-propylene-diene monomer. Special attention is focused on the char layers of ethylene-propylene-diene monomer formed in different ablation environments by analyzing the characters of the char layers, which was defined as an uneven porous medium. An overall ablation model has been developed to describe the simultaneous thermo-chemical ablation and particle erosion of ethylene-propylene-diene monomer using porous medium equation methodology. A total of six calculations of one kind of ethylene-propylene-diene monomer material have been performed to obtain the theory erosion properties in two lab-scale solid rocket motors, and all the submodels of overall ablation model have been validated.