Assessment of a 3D ablation material response model for lightweight quartz fiber reinforced phenolic composite
Assessment of a 3D ablation material response model for lightweight quartz fiber reinforced phenolic composite
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轻质石英纤维增强酚醛复合材料的 3D 烧蚀材料响应模型评估
DOI：
10.1002/pc.27005
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发表时间：
2022-08
影响因子：
5.2
通讯作者：
Ping Hu
中科院分区：
文献类型：
--
作者：
Xiaojie Yan;He Huang;Zhaolin Fan;Changqing Hong;Ping Hu
了解材料的烧蚀机理是载人再入飞行器热防护系统设计的关键。为了研究轻质石英纤维增强酚醛(LQP)复合材料在空气动力超热环境下的热行为，建立了考虑表面和体积烧蚀的LQP复合材料三维烧蚀材料响应模型。它被用来预测材料的表面温度和背温、线烧蚀速度和质量损失率。分析了三维温度场、热解度、气体流动和压力场。为了评价模型的准确性，对LQP复合材料进行了氧乙炔火焰烧蚀试验。在烧蚀过程中，热解气体主要通过表面传播，然后通过侧壁传播。气体压力在早期达到峰值，而不是不断增加。对LQP复合材料的隔热机理分析表明，辐射效应和热阻效应是提高耐烧蚀性能的主要因素，分别占50.0%和37.3%。较低的导热系数决定了其优异的隔热性能。通过在材料中引入高发射率粉末，在材料表面制备涂层，调整酚醛纤维和硅纤维的含量，可以降低材料的表面温度。
To understand the ablation mechanism of materials is crucial for the design of thermal protection system (TPS) for manned reentry vehicles. To investigate the thermal behavior of lightweight quartz fiber reinforced phenolic (LQP) composite subjected to an aerodynamic hyper‐thermal environment, a 3D ablation material response model for the LQP composite is developed with surface and volume ablation in consideration. It is used to predict surface and back temperature, linear ablation velocity, and quality loss rate of the material. The 3D temperature field, pyrolysis degree, gas flow, and pressure field are analyzed as well. To evaluate the accuracy of the model, an ablation test of oxyacetylene flame is adopted on the LQP composite. In the ablation process, the pyrolysis gases propagate primarily through the surface primarily and through the sidewall afterwards. The gas pressure peaks at the early stage rather than increasing constantly. The analysis of thermal insulation mechanism of the LQP composite indicates that the radiation and heat blockage effect are the primary factors to improve the ablation resistance, accounting for 50.0% and 37.3% of the improvement, respectively. The low thermal conductivity determines the admirable thermal insulation performance. The surface temperature of material can be reduced by introducing high emissivity powder into the material, preparing coating on the surface, and adjusting the content of phenolic and silica fiber.
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影响因子：
2.1
作者：
J. Marschall;Michael E. Cox
通讯作者：
J. Marschall;Michael E. Cox
影响因子：
5.2
作者：
Keyi Wang;H. Gu;A. Huang;Changmei Ke;Meijie Zhang;Zhian Luo;Lvping Fu
通讯作者：
Keyi Wang;H. Gu;A. Huang;Changmei Ke;Meijie Zhang;Zhian Luo;Lvping Fu
DOI：
10.1016/j.ijheatmasstransfer.2016.11.067
发表时间：
2017-05
影响因子：
5.2
作者：
J. Lachaud;J. Scoggins;T. Magin;M. G. Meyer;N. Mansour
通讯作者：
J. Lachaud;J. Scoggins;T. Magin;M. G. Meyer;N. Mansour
影响因子：
2.1
作者：
R. A. Polehn;M. Keyhani;M. Parang
通讯作者：
R. A. Polehn;M. Keyhani;M. Parang
DOI：
10.2514/8.8624
发表时间：
1960-07
期刊：
Journal of the Aerospace Sciences
影响因子：
--
作者：
Mac C. Adams
通讯作者：
Mac C. Adams