非平衡化学反应流场NS方程计算研究

计算物理 ›› 1997, Vol. 14 ›› Issue (1): 6-12.

非平衡化学反应流场NS方程计算研究

欧阳水吾, 谢中强

北京空气动力研究所, 100074

收稿日期:1995-04-16 修回日期:1995-04-16 出版日期:1997-01-25 发布日期:1997-01-25
基金资助:
国防预研基金

NAVIER STOKES COMPUTATION OF NONEQUILIBRIUM CHEMICALLY REACTING FLOWFIELDS

Ou Yang Shuiwu, Xie Zhongqiang

Beijing Institute of Aerodynamics, 100074

Received:1995-04-16 Revised:1995-04-16 Online:1997-01-25 Published:1997-01-25

摘要/Abstract

摘要： 介绍一种新的与化学问题相耦合的NS方程数值方法,用来计算有限速率化学反应再入流场.采用迎风TVD差分格式的激波捕捉法,求解控制方程。本项研究针对轴对称流动。然而,可以直接推广到三维流动和其它的化学反应系统。所采用的整个泰氟隆-空气化学反应模型是由23个化学组元和35个化学反应所组成。对钝头球锥体全流场(包括前体和近尾迹)进行了数值模拟,获得了充分收敛的数值解。对清洁空气流场计算的峰值电子数密度与实验结果符合很好。

关键词: 化学非平衡粘性流, NS方程, 高超声速再入飞行器, TVD差分格式

Abstract: A new coupled chemistry NS numerical method is proposed for predicting finite rate chemically reacting re entry flowfields. The governing equations are solved using the upwind TVD shock capturing scheme. For simplicity, the present study focuses on axisymmetric flows;however, subsequent extensions to three dimensional flows and /or other chemical systems are also relatively straightforward. The overall Teflon air chemical reaction model used consists of 23 species and 35 gas phase reactions.The numerical simulations are made for the complete flowfield (fore body and near wake) over blunt sphere cone. The fully converged solution and the computational results are obtained. The computed peak electron densities in the clean air flowfield agree well with experimental results.

Key words: Chemical non equilibrium viscous flows, Navier Stokes Equations, Hypersonic re-entry vehicle, TVD difference scheme

中图分类号:

V211.3

欧阳水吾, 谢中强. 非平衡化学反应流场NS方程计算研究[J]. 计算物理, 1997, 14(1): 6-12.

Ou Yang Shuiwu, Xie Zhongqiang. NAVIER STOKES COMPUTATION OF NONEQUILIBRIUM CHEMICALLY REACTING FLOWFIELDS[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 1997, 14(1): 6-12.

[1]	刘宇陆, 蒋剑波, 邱翔, 卢志明. 充分发展槽道湍流的小波数值分析[J]. 计算物理, 2005, 22(3): 197-205.
[2]	王刚, 叶正寅. 非结构混合网格上的NS方程求解方法[J]. 计算物理, 2004, 21(2): 161-165.
[3]	谢中强, 欧阳水吾. 高超声速三维热化学非平衡电离流动计算研究[J]. 计算物理, 1998, 15(6): 711-716.
[4]	杨顶辉, 王汝权. 一种具有较小数值耗散的对称TVD格式[J]. 计算物理, 1995, 12(2): 207-214.
[5]	陈耀松, 江涛. NS方程的一个开路边条件[J]. 计算物理, 1995, 12(2): 255-260.
[6]	宋松和, 王汝权. 用高分辨差分格式解SNS方程[J]. 计算物理, 1991, 8(2): 203-210.