化学非平衡边界层绕流计算

本文介绍用化学非平衡边界层方程组,数值计算高超声速钝头体绕流流场、组元浓度和电子密度分布情况。计算中考虑了电离空气的七种主要成分以及相互间的化学反应,比较了变熵、普朗特数及Lewis数的影响,讨论了完全催化壁和非催化壁两种情况,计算结果与文献及试验进行了比较,结果令人满意。

NUMERICAL CALCULATION OF CHEMICAL NONEQUILIBRIUM BOUNDARY LAYER FLOW

The numerical calculation of the hypersonic flow field about blunt bodies, the species concentration and the electron density distribution are presented using the chemical nonequilibrium boundary layer equations. Seven species and seven chemical reaction equations of ionized air are considered in the calculation. The results of variable entropy are compared with that of the isentropy. The effect of pran-dtl number and Lewis number, fully catalytic and noncatalytic wall conditions on the flow are discussed. Calculation results are good compared with other results of the calculation and experimental data.