固体推进剂燃烧气体释放的计算流体动力学模拟（英文）

Computational Fluid Dynamics Simulation for Combustion Gas Leak of Solid Propellant

为建立固体推进剂燃烧气体检测的测试装置,采用计算流体动力学(CFD)模拟计算了不同参数对气体释放的影响。结果表明,测试装置腔室体积应大于2.7×10~5 mm^3,风口直径应为Φ100mm,温度变化对气体释放影响较小。球形障碍物和立方体障碍物对气体三维模型有显著影响。根据以上模拟结果和参数,设计了固体推进剂燃烧气体模型测试装置原理图,设定了测试装置的具体参数。模拟和设计的测试装置可用于下一步红外遥测谱仪对燃烧气体的测试。

To build the test bench for the combustion gas detection of solid propellant,the influence of different parameters on gas leak was calculated by computational fluid dynamics（CFD）simulation.The results show that the volume of gas chamber for the test bench should be larger than 2.7×10^5 mm^3.The diameter of fan-sizing should beΦ100 mm.The influence of gas leak is not obvious when the temperature changes.The sphere and cubic disturbance objects have a significant effect on the three-dimensional model of gas.According to the above simulation results and parameters,the principle diagram of the combustion gas model test bench fo solid propellant was designed.The specific parameters of the test bench were set.The simulated and designed test bench can be used to test the combustion gas by IR-remote detection instrument in next research.