含有限速率化学反应火箭燃气射流流场的数值模拟

Numerical Simulation of Gas Efflux Field with Finite Rate Chemical Reactions

该文在归纳、总结、分析以往火箭燃气射流流场数值模拟的基础上，结合含有限速率化学反应火箭燃气射流流场的特有规律，利用推导的ＴＶＤ组合数值模拟算子，对某火箭燃气射流流场进行了数值计算。由于含化学反应流体的流动和单一组分混合流流动之间存在着较大的差异，特别是化学反应的存在在一定程度上影响了系统能量的改变，进而改变整个流场中的压力和温度分布，同时化学反应和激波之间的相互增强作用引发了流场中的异常压力和温度，结合数值模拟的结果，分析了产生这些现象的原因，并且和以往的计算结果进行了对比。

n the basis of numerical simulations of gas efflux field in the past,this thesis calculated one gas efflux field with TVD scheme deduced by writer in his Ph. D dissertation that is used for the flows with finite rate chemical reactions. There are much difference between reactive-flow and mixed-flow,chemical reactions may influence the energy of system, then these can change the pressure and temperature profiles of the field. At the same time,actions of co-enhance between reaction and shock wave can give rise to abnormal pressure and temperature. The cause has been analyzed and the comparison of results has been done.