Optimization of spatial-temporal distribution of a body force for reducing skin friction drag in a fully developed channel flow

DOI

Bibliographic Information

Other Title
  • 平行平板間チャネル乱流における摩擦抵抗低減制御のための体積力の時空間分布最適化

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Description

<p>Since turbulence plays important roles in enhancing the skin friction drag of high speed transport systems and pipelines, its understanding and flexible control are of great significance in various engineering applications. In this study, we optimize the spatio-temporal distribution of the body force in a low Reynolds number turbulent channel flow by leveraging the adjoint analysis in order to understand turbulence physics and to develop a new control strategy. The optimal control input is found to effectively reduce the skin friction drag by actively manipulating near-wall coherent structures, which are essential for the self-sustaining processes of wall turbulence.</p>

Journal

  • SEISAN KENKYU

    SEISAN KENKYU 75 (1), 31-36, 2023-02-01

    Institute of Industrial Science The University of Tokyo

Details 詳細情報について

  • CRID
    1390295203825361280
  • DOI
    10.11188/seisankenkyu.75.31
  • ISSN
    18812058
    0037105X
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Disallowed

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