石英灯辐射加热条件下石英/酚醛复合材料烧蚀行为的多场耦合数值模拟

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中图分类号：TB332 文献标志码：A 文章编号：1671-8755（2025）03-0049-09

Multifield Coupled Numerical Simulation of Ablation Behavior of Quartz/Phenolic Composite Materials under Quartz Lamp Radiation Heating Conditions

CHEN Tingze，ZHANG Kuibao，LI Bo，RANLijuan，ZHOU Lin （State Key Laboratory of Environment-friendly Energy Materials， Southwest University ofScience and Technology，Mianyang 621O1o，Sichuan，China）

Abstract ： For the ablation heat transfer problem of quartz/phenolic fiber composites，a three-dimensional ablation response model was established by comprehensively considering thermal blockage，gas flow，and volume ablation effects.The model aimed to study the thermal behavior of phenolic resin impregnated quartz fiber compositesunder high-temperature conditions， predict their surface temperature，back temperature，and mass loss，and analyze the three-dimensional temperature，gas flow velocity，pressure distribution，and pyrolysis degree.To verify the model's accuracy，a 6OO second single-sided 40kW/m2 （20 quartz lamp radiation ablation experiment was conducted. The results indicate that the error of the predicted pyrolysis degree is ±9% ，and the error of the 5 mm depth temperature simulation value compared with the experimental value is ±30°C ，while for the 1O mm depth，it is ±80°C .Under high heatflux，the heat of quartz/phenolic fiber composites is mainly concentrated inthe ablation surface layer and shallow regions.The gas pressure rapidly reaches its peak in the initial stage and then diffuses through the surface and subsequently from the side wals. The construction of this model is beneficial for understanding the ablation heat transfer of quartz/phenolic composites and has guiding value for their design.

Keywords：Phenolic resin；Thermal response；Composite material；Numerical simulation

当航天器返回大气层时，航天器承受极高的热载荷和力学载荷，为了保护航天器主体结构，采用先进的热防护系统是十分必要的[1]。（剩余11330字）