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Alternative TitleTransition effect on separation bubble of shock wave/boundary layer interaction in a compression ramp
童福林; 李新亮; 唐志共; 朱兴坤; 黄江涛
Source Publication航空学报
Other AbstractDirect numerical simulations (DNS) of shock wave and transitional boundary layer interaction for a 24° compression corner at Mach number 2.9 are performed to study the effect of transition on the separation bubble at the ramp corner. At upstream, the flat-plate transition is triggered by the periodic blow and suction disturbance. The interaction of shock wave and transitional boundary layer is then simulated by setting the length of upstream flat-plate. The extent of separation agrees well with those of the experimental and direct numerical simulation data, which validate the results. Transition effect on the separation bubble in the interaction region is researched and the turbulent kinetic energy budget in the bubble is analyzed. Results indicate that the coherent structures at the early stage of transition have a serious influence on the separation bubble, in which the turbulent spots are formed by the hairpin vortices. Then the scale of separation bubble is the smallest and the shape is spike-type in the spanwise direction. With the evolution of transition, the turbulent production and dissipation term in the separation bubble gradually reduce by four times, while the turbulent transport term contributes to the balance of the turbulent production and dissipation.
KeywordTransition Compression Ramp Shock Wave/boundary Layer Interaction Separation Bubble Direct Numerical Simulation
Indexed ByCSCD
WOS Keywordtransition ; compression ramp ; shock wave/boundary layer interaction ; separation bubble ; direct numerical simulation
Funding Organization国家自然科学基金
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Cited Times:3[CSCD]   [CSCD Record]
Document Type期刊论文
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GB/T 7714
童福林,李新亮,唐志共,等. 转捩对压缩拐角激波/边界层干扰分离泡的影响[J]. 航空学报,2016,37(10):2909-2921.
APA 童福林,李新亮,唐志共,朱兴坤,&黄江涛.(2016).转捩对压缩拐角激波/边界层干扰分离泡的影响.航空学报,37(10),2909-2921.
MLA 童福林,et al."转捩对压缩拐角激波/边界层干扰分离泡的影响".航空学报 37.10(2016):2909-2921.
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