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The mechanism of breakdown in laminar-turbulent transition of a supersonic boundary layer on a flat plate-temporal mode

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Abstract

Temporal mode direction numerical simulation has been done for the transition of a supersonic boundary layer on a flat plate with Mach number 4.5. Analysis of the result showed that during the breakdown process in laminar-turbulent transition, the mechanism causing the mean flow profile to evolve swiftly from laminar to turbulent was that the modification of mean flow profile by the disturbances, when they became larger, led to a remarkable change of its stability characteristics. Though the most unstable T-S wave was of second mode for laminar flow, the first mode waves played the key role in the breakdown process in laminar-turbulent transition.

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Authors and Affiliations

  1. Department of Mechanics, Tianjin University, 300072, Tianjin, China

    Huang Zhangfeng, Cao Wei & Zhou Heng

  2. Liu-Hui Center of Applied Mathematics, Nankai University and Tianjin University, 300072, Tianjin, China

    Cao Wei & Zhou Heng

Authors
  1. Huang Zhangfeng
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  2. Cao Wei
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  3. Zhou Heng
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Correspondence to Zhou Heng.

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Huang, Z., Cao, W. & Zhou, H. The mechanism of breakdown in laminar-turbulent transition of a supersonic boundary layer on a flat plate-temporal mode. Sci China Ser G: Phy & Ast 48, 614–625 (2005). https://doi.org/10.1360/142005-19

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  • DOI: https://doi.org/10.1360/142005-19

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