入流周期性温度激励下的二维超声速混合层混合增强  

Mixing Enhancement of a 2D Supersonic Mixing Layer Induced by Inflow Periodic Temperature Excitation

作　　者：孙明波[1] 王振国[1] 梁剑寒[1] 

机构地区：[1]国防科技大学航天与材料工程学院,长沙410073

出　　处：《宇航学报》2008年第2期444-448,共5页Journal of Astronautics

基　　金：国家自然科学基金(90505009);国防科技大学博士论文创新基金

摘　　要：对入流施加周期性温度激励下的二维超声速混合层的混合增强进行大涡模拟研究,系统考虑了激励振幅、频率、混合层对流马赫数、雷诺数以及激励施加位置多个参数的影响。计算结果表明,雷诺数对混合效果影响不大,激励振幅、频率、混合层的对流马赫数以及激励施加位置对于混合效果有着重要的影响。Large eddy simulations have been performed for a 2D supersonic mixing layer with enforcing periodic temperature perturbation in the inflow boundary layer.The calculation considers the effect on mixing of various parameters,including amplitude of the perturbation,frequency of the perturbation,convective Mach number,Reynolds number and position where perturbation enforced.The results show that Reynolds number has little influence on mixing effect while others have great influence on mixing enhancement.

关 键 词：超声速混合层 混合增强 激励 大涡模拟 

分 类 号：V435.12[航空宇航科学与技术—航空宇航推进理论与工程]