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有质量引射和化学反应的内部热传导的确定是卫星再入舱热防护设计中遇到的一个重要问题。本文给出解决这类问题的一个积分方法。本文从有限元的能量平衡出发,导出了一组确定离散点温度的常微分方程。计算表明,本文给出的方法对确定热解区和分解面的温度分布更为有效。本文提供的方法对一元热传导的计算结果与解析解是一致的。对地面烧蚀实验状态的计算结果与测量结果也是一致的。
The determination of internal heat conduction with mass ejection and chemical reactions is an important issue encountered in the thermal protection design of satellite reentry compartments. This article gives an integral method to solve such problems. Based on the energy balance of the finite element method, a set of ordinary differential equations to determine the discrete point temperature is derived. The calculation shows that the method given in this paper is more effective in determining the temperature distribution in pyrolysis zone and decomposition zone. The method provided in this paper is consistent with the analytical solution of the unary heat conduction. The calculation results of ground ablation experimental conditions and the measurement results are also consistent.