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Direct numerical simulation of shock/turbulent boundary layer interaction in a supersonic compression ramp

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Abstract

A 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.

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Authors and Affiliations

  1. Key Laboratory of High Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China

    XinLiang Li & Xian Liang

  2. The State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China

    DeXun Fu & YanWen Ma

Authors
  1. XinLiang Li
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  2. DeXun Fu
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  3. YanWen Ma
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  4. Xian Liang
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Correspondence to XinLiang Li.

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Li, X., Fu, D., Ma, Y. et al. Direct numerical simulation of shock/turbulent boundary layer interaction in a supersonic compression ramp. Sci. China Phys. Mech. Astron. 53, 1651–1658 (2010). https://doi.org/10.1007/s11433-010-4034-x

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  • DOI: https://doi.org/10.1007/s11433-010-4034-x

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