可压涡卷对并的燃烧反应放热效应分析  

An Investigation of Effects of Heat Release on the Compressible Vortex-Pairing with Combustion Reactions

作　　者：王强[1] 周伟江[1] 李锋[1] 

机构地区：[1]北京空气动力研究所,北京100074

出　　处：《空气动力学学报》2000年第z1期139-144,共6页Acta Aerodynamica Sinica

摘　　要：通过以高精度迎风／对称紧致差分杂交算法对组元输运守恒方程和含源项流 动Ｎａｖｉｅｒ－Ｓｔｏｋｅｓ方程的全耦合求解，在无放热、低放热和高放热三种情形下，对可压平 面混合层中大尺度涡卷对并所受反应放热效应现象进行了直接数值模拟研究。对比显示， 高放热下无涡并出现，亚谐扰动将基频涡卷雏形撕裂，直接形成大尺度亚谐涡卷。文中还 分析了不同反应放热量对混合层厚度、产物生成率以及流场脉动行为特征等方面的影响。A high-accuracy upwind/symmetric compact difference hybrid method is used to solve flow motion equations and species conservation equations simultaneously. The effects of heat release on the compressible vortex-pairing with combustion reactions are analyzed. The non-, low and high-heat release cases are considered. The results show that the vortex-pairing does not exist at high-heat release case, and that the fundamental vortex-rollup is shredded by the subharmonic wave. The mixing layer thickness, product rate and turbulent motions are also researched.

关 键 词：可压平面混合层 涡并 放热效应 紧致差分格式 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程]