冲压加速器燃烧流场的数值模拟  

Numerical Simulation of the Supersonic Combustion Flowfield in a Ram Accelerators

作　　者：陈坚强[1] 张涵信[1] 高树椿[1] 

机构地区：[1]中国空气动力研究与发展中心

出　　处：《空气动力学学报》1998年第3期297-303,共7页Acta Aerodynamica Sinica

摘　　要：本文利用ＥＮＮ格式，通过求解包含非平衡效应的完全Ｎ－Ｓ方程，数值模拟了超声速燃烧流动中很有兴趣的Ｈ２／Ａｉｒ斜爆轰波冲压加速器的绕流。计算结果表明，本文采用的三阶格式能较好地捕捉激波、膨胀波和爆轰波，对粘性分离区的计算也有较高的分辨能力。数值模拟结果还清楚地阐明了冲压爆轰加速的流动机理，并建立了求解冲压加速器流场的数值计算软件及相应的推力计算软件。In this paper,the third order ENN scheme is used to solve the complete Navier Stokes equations for the supersonic flow over oblique detonation ram accelerator.The numerical results show that the present third order scheme can capature the shock wave,expansion wave and detonation wave clearly.Furthmore,it also has high resolution for viscous separation flowfield calculation.Meanwhile,the mechanism of acceleration is clarified by the numerical simulation,and the code for calculating the thrust and flowfield about ram accelerator is also given.

关 键 词：ENN格式 冲压加速器 燃烧流动 数值模拟 

分 类 号：V235.21[航空宇航科学与技术—航空宇航推进理论与工程]