火星气囊气体发生器充气过程稳压仿真研究

摘要

Pressure stabilization parameters of gas generator in cold and normal environments were calculated. Convective heat transfer both inside and outside the airbag, molecular gas radiation heat transfer, and water vapor phase-change heat transfer a chiefly researched in this paper. The relationships of gas temperature, mass of exhaust gas and gas generator mass flow rate with time changing has been obtained. The analysis can provide the data to help project design.%文章对低温和常温环境下的气囊稳压充气过程的参数进行了仿真计算。主要分析计算了气囊内外壁的对流换热、囊内气体与囊壁间辐射以及水蒸气液化等传热方式的传热量。同时，计算了在不同环境温度下．气囊内气体温度、充气质量以及充气质量流率随时间的变化关系。分析结果可以为工程研制提供参考和数据支持。