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以EPDM类绝热材料烧蚀特性为研究对象,借鉴多孔介质领域的相关理论和方法,以炭化层的孔隙结构特征和参数为纽带,建立了考虑热化学烧蚀、颗粒侵蚀和气流剥蚀的EPDM类绝热材料耦合烧蚀模型,并进行了模型的初步实验验证。结果表明,所建立的模型不仅在EPDM类绝热材料烧蚀率预示方面具有较高的计算精度,而且在细管上能够基本反映绝热材料的烧蚀特性。
Taking the ablation properties of EPDM insulation as the research object and drawing lessons from the relevant theories and methods in the field of porous media and taking the pore structure characteristics and parameters of the carbonized layer as the linkages, the EPDM classes considering thermal chemical ablation, particle erosion and air erosion are established Adiabatic material coupling ablation model, and the model of the preliminary experimental verification. The results show that the proposed model not only has higher accuracy in predicting the ablation rate of EPDM insulation materials, but also can basically reflect the ablation characteristics of the insulation material on the thin tube.