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Hybrid LES/RANS Simulation of Shock/Turbulent Boundary-Layer Interactions

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Proceedings of the International Conference on Aerospace System Science and Engineering 2022 (ICASSE 2022)

Part of the book series: Lecture Notes in Electrical Engineering ((LNEE,volume 1020))

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Abstract

In order to reduce the computational cost of Large Eddy Simulation method at high Reynolds number, the hybrid LES/RANS model-Improved Delayed Detached Eddy Simulation (IDDES) method based on k-ω SST turbulence model is used to simulate a 2.84 Mach number flow of the 24° compression ramp. The effects of two kinds of inlet boundary conditions which includes fixed inlet and turbulent inlet were investigated. The numerical simulation reproduces the phenomena of boundary layer separation, shock separation and reattachment. The results show that the length of simulated separation region under the fixed boundary condition is significantly larger than the experimental result, and the length of the separation region under the turbulent inlet decreases with the increase of turbulent intensity, which is gradually close to the experimental results. The results show that the IDDES hybrid model is very dependent on the turbulence of the incoming flow.

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Authors and Affiliations

  1. Shanghai Jiao Tong University, Shanghai, China

    Tingkai Dai & Bo Zhang

Authors
  1. Tingkai Dai
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  2. Bo Zhang
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Correspondence to Tingkai Dai .

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Editors and Affiliations

  1. School of Aeronautics and Astronautics, Shanghai Jiao Tong University, Shanghai, China

    Zhongliang Jing

  2. School of Aeronautics and Astronautics, Shanghai Jiao Tong University, Shanghai, China

    Xingqun Zhan

  3. University of Toronto Institute for Aerospace Studies (UTIAS), University of Toronto, Toronto, ON, Canada

    Christopher Damaren

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Dai, T., Zhang, B. (2023). Hybrid LES/RANS Simulation of Shock/Turbulent Boundary-Layer Interactions. In: Jing, Z., Zhan, X., Damaren, C. (eds) Proceedings of the International Conference on Aerospace System Science and Engineering 2022. ICASSE 2022. Lecture Notes in Electrical Engineering, vol 1020. Springer, Singapore. https://doi.org/10.1007/978-981-99-0651-2_11

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  • DOI: https://doi.org/10.1007/978-981-99-0651-2_11

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-99-0650-5

  • Online ISBN: 978-981-99-0651-2

  • eBook Packages: EngineeringEngineering (R0)

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