化学非平衡喷管流计算方法的研究

A Study of Calculating Method for Chemical Nonequilibrium Nozzle Flow

本文提供了考虑化学反应非平衡和振动非平衡的喷管流动计算方法。在忽略扩散、粘性和热传导及辐射损失的假设下，得到完全气体一维定常流动方程，再加上振动能松弛方程和化学反应速率方程即可数值积分求解。采用扰动法得到接近平衡流的一组积分初值。采用“逆积分方法”求解通过喉道。计算结果是令人满意的。

This paper presents a calculating method about the nozzle flow that considers chemical nonequilibrium and vibrational nonequilib-rium. On the assumption that diffusion, viscosity,thermal conductivity and ration are negligible,obtain onc dimensional steady flow equations for the perfact gas. with the addition of the relaxed equations of vibra-tional energy and cliemical reaction rate equations, these cquations can be solved by numerical integrated. A group of integral initial values of near equilibrium flow are obtained by perturbation method. In the throat region,the inverse integration method is used in calculation. The resuIts of numerical examples are satisfactory.