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首页> 外文期刊>Journal of aerospace engineering >One-Dimensional Aerodynamic Heating and Ablation Prediction
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One-Dimensional Aerodynamic Heating and Ablation Prediction

机译：一维空气动力加热和消融预测

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A simplified method is developed to calculate aerodynamic heating, ablation, and structural temperature response for a body traveling at high speeds. Mach number, altitude, and angle of attack are used as a function of time. Compressibility effects are considered by using Eckert's reference temperature approach. Convective aerodynamic heating is calculated using external flow relations. Local pressure values are found through modified Newtonian theory. An approximate recession method that uses the heat of ablation is coupled to the aerodynamic heating. An in-depth solution accounts for material decomposition; however, it does not include the energy absorption of pyrolysis gases through the material. Reduction in the heat transfer coefficient caused by the transpiring gases is estimated. An Arrhenius equation is used to model the density of the ablative material. The method is examined for the validation of six different cases, and predictions are found to be in good agreement with experimental and analytical results. The verification studies indicate that the methodology is well suited for predicting the ablation and thermal response of a thermal protection system. (c) 2019 American Society of Civil Engineers.
机译：开发了一种简化的方法来计算高速行驶的空气动力学加热，消融和结构温度响应。 Mach编号，高度和攻角用作时间的函数。通过使用Eckert的参考温度方法考虑可压缩效果。使用外部流动关系计算对流空气动力学加热。通过改进的牛顿理论发现了局部压力值。使用消融热的近似衰退方法耦合到空气动力学加热。深入的解决方案用于材料分解;然而，它不包括通过材料的热解气体的能量吸收。估计由转档气体引起的传热系数的降低。 Arrhenius方程用于模拟烧蚀材料的密度。该方法被检查用于验证六种不同的病例，并发现预测与实验和分析结果吻合良好。验证研究表明，该方法非常适用于预测热保护系统的消融和热响应。 （c）2019年美国土木工程学会。

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