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DNS of shock/boundary layer interaction flow in a supersonic compression ramp
Li XL(李新亮); Fu DX(傅德薰); Ma YW(马延文); Liang X(梁贤); Li, XL (reprint author), CAS, Inst Mech, LHD, Beijing 100190, Peoples R China
Source PublicationCOMPUTATIONAL FLUID DYNAMICS 2010
2011
Pages729-737
Conference Name6th International Conference on Computational Fluid Dynamics
Conference DateJUL 12-16, 2010
Conference PlaceSt Petersburg, RUSSIA
AbstractA direct numerical simulation of the shock/turbulent boundary layer interaction flow in a supersonic 24-degree compression ramp is conducted with the free stream Mach number 2.9. The blow-and-suction disturbance in the upstream wall boundary is used to trigger the transition. Both the mean wall pressure and the velocity profiles agree with those of the experimental data, which validates the simulation. The turbulent kinetic energy budget in the separation region is analyzed. Results show that the turbulent production term increases fast in the separation region, while the turbulent dissipation term reaches its peak in the near-wall region. The turbulent transport term contributes to the balance of the turbulent conduction and turbulent dissipation. Based on the analysis of instantaneous pressure in the downstream region of the mean shock and that in the separation bubble, the authors suggest that the low frequency oscillation of the shock is not caused by the upstream turbulent disturbance, but rather the instability of separation bubble.
KeywordTurbulent-boundary-layer Direct Numerical-simulation
DepartmentLHD可压缩湍流
ISBN978-3-642-17883-2
URL查看原文
Indexed ByCPCI
Language英语
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/46806
Collection高温气体动力学国家重点实验室
Corresponding AuthorLi, XL (reprint author), CAS, Inst Mech, LHD, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Li XL,Fu DX,Ma YW,et al. DNS of shock/boundary layer interaction flow in a supersonic compression ramp[C]. HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY:SPRINGER-VERLAG BERLIN,2011:729-737.
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