斜坡增强混合的数值研究

推进技术 ›› 1999, Vol. 20 ›› Issue (2): 49-52.

斜坡增强混合的数值研究

梁剑寒,王正华,王承尧

国防科技大学航天技术系;国防科技大学航天技术系;国防科技大学航天技术系

发布日期:2021-08-15

NUMERICAL SIMULATIONS OF MIXING ENHANCEMENT OF RAMP INJECTORS IN SCRAMJET COMBUSTOR

Dept.of Aerospace Technology,National Univ.of Defence Technology,Changsha,410073;Dept.of Aerospace Technology,National Univ.of Defence Technology,Changsha,410073;Dept.of Aerospace Technology,National Univ.of Defence Technology,Changsha,410073

Published:2021-08-15

摘要/Abstract

摘要： 采用隐式方法求解三维可压Ｎ－Ｓ方程及组分方程，数值模拟了后掠、无后掠斜坡的混合增强流场。比较了两种斜坡的混合增强效果及产生的流向涡量的强度。计算结果表明后掠斜坡产生流向涡的强度明显高于无后掠斜坡，其混合增强效果也更好。

关键词: 超音速燃烧;湍流混合;斜面;斜激波;数值仿真

Abstract: Numerical simulations were conducted to study the H 2/Air mixing enhancement flowfield of ramp injectors.An implicit finite volume method was used to solve the 3D compressible Navier Stokes equations and chemical species continuity equations.The stream vorticity generated by swept and unswept ramps was compared as well as the mixing efficiency on the cross stream planes.The results show the superiority of swept ramp to unswept ramp

Key words: Supersonic combustion;Turbulent mixing;Ramp;Oblique blast;Numerical simulation

梁剑寒,王正华,王承尧. 斜坡增强混合的数值研究[J]. 推进技术, 1999, 20(2): 49-52.