推进剂真空排放过程仿真与试验研究

建立了N2 O4真空射流的物理数学模型并进行计算。计算结果表明：温度越高，闪蒸越剧烈，羽流角越大，排放时间较短，出口温度越高；管径越大，闪蒸区出口截面上闪蒸的推进剂越多，温降越剧烈。在仿真基础上开展地面试验，试验表明仿真计算结果是正确的。

SimuIation and ExperimentaI Study of PropeIIant Vacuum Discharge Process

Nitrogen Tetroxide （N2 O4 ）vacuum venting model is built in this paper,and is calcu-lated.Calculation results show that the higher the initial temperature of the propellant,the intenser the flashing,the wider the plume angle,the shorter it takes to empty the pipeline,the higher the out temperature;the larger the diameter the more propellant shall flash,and the greater the temperature drop.Based on the simulation results,the ground experiment is conducted,and results show that the calculation results are correct.