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Flow Control: Drag Reduction I

ORAL · T17 · ID: 679629

Presentations

  • Direct Numerical Simulation of Microbubble Drag Reduction on Superhydrophobic Surface based on Nek5000

    ORAL

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    Publication: [1] Pang, M. J., Wei, J. J., & Yu, B. (2014). Numerical study on modulation of microbubbles on turbulence frictional drag in a horizontal channel. Ocean Engineering, 81, 58-68.<br>[2] Martell, M. B., Perot, J. B., and Rothstein, J. P. (2009). Direct numerical simulations of turbulent flows over superhydrophobic surfaces. Journal of Fluid Mechanics, 620, 31-41.

    Presenters

    • Byeong-Cheon Kim

      University of Ulsan

    Authors

    • Byeong-Cheon Kim

      University of Ulsan

    • Kyoungsik Chang

      School of Mechanical Engineering, University of Ulsan, University of Ulsan

    • Sang-Wook Lee

      School of Mechanical Engineering, University of Ulsan, University of Ulsan

    • Khanh Hoan Nguyen

      University of Ulsan

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  • On the effective slip length of superhydrophobic surfaces in turbulent flows

    ORAL

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    Presenters

    • Jae Sung Park

      University of Nebraska, University of Nebraska–Lincoln, University of Nebraska-Lincoln, University of Nebraska - Lincoln

    Authors

    • Alexander J Rogge

      University of Nebraska-Lincoln

    • Jin Lee

      Dong-A University

    • Simon Song

      Hanyang University

    • Jae Sung Park

      University of Nebraska, University of Nebraska–Lincoln, University of Nebraska-Lincoln, University of Nebraska - Lincoln

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  • Laminar drag reduction in surfactant-contaminated superhydrophobic channels

    ORAL

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    Presenters

    • Samuel D Tomlinson

      University of Manchester

    Authors

    • Samuel D Tomlinson

      University of Manchester

    • Frederic Gibou

      University of California, Santa Barbara

    • Paolo Luzzatto Fegiz

      University of California, Santa Barbara, University of California, Santa Barbra

    • Fernando Temprano-Coleto

      Princeton University

    • Oliver E Jensen

      University of Manchester

    • Julien R Landel

      Univ of Manchester, University of Manchester

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  • Direct numerical simulation to survey the effect of air layer on drag reduction of channel flow with the superhydrophobic surface.

    ORAL

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    Publication: 1 Michael B. Martell, Jonathan P. Rothstein, and J. Blair Perot, "An analysis of superhydrophobic turbulent drag reduction mechanisms using direct numerical simulation," Phys. Fluids 22, 065102 (2010).<br>2 Michael B. Martell, Jonathan P. Rothstein, and J. Blair Perot, "Direct numerical simulation of turbulent flows over superhydrophobic surfaces," J. Fluid Mech. 620, 31 (2009).<br>3 Jongmin Seo and Ali Mani, "Effect of texture randomization on the slip and interfacial robustness in turbulent flows over superhydrophobic surfaces," Phys. Rev. Fluids 3, 044601 (2018).<br>4 Jongmin Seo, R.Garrcia-Mayoral, Ali Mani, "Turbulent flow over superhydrophobic surfaces flow-induced capillary waves, and robustness of air-water interfaces," J. Fluid Mech. 835, 45 (2017).<br>5 Jongmin Seo and Ali Mani, "On the scaling of the slip velocity in turbulent flows over superhydrophobic surfaces," Phys. Fluids 28, 025110 (2016).<br>6 Robert D.Moser, John Kim, and Nagi N.Mansour, "Direct numerical simulation of turbulent channel flow up to 590 ," Phys. Fluids, 11, 943 (1999).

    Presenters

    • Thanh H Nguyen

      Graduate school, Dept. of Mechanical Engineering, University of Ulsan

    Authors

    • Thanh H Nguyen

      Graduate school, Dept. of Mechanical Engineering, University of Ulsan

    • Kyoungsik Chang

      School of Mechanical Engineering, University of Ulsan, University of Ulsan

    • Sang-Wook Lee

      School of Mechanical Engineering, University of Ulsan, University of Ulsan

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  • Water-lubricated channel flow.

    ORAL

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    Presenters

    • Alessio Roccon

      Vienna Univ of Technology

    Authors

    • Alessio Roccon

      Vienna Univ of Technology

    • Francesco Zonta

      Vienna Univ of Technology, TU Wien

    • Alfredo Soldati

      Vienna Univ of Technology, TU Wien & University of Udine

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  • Active Drag Reduction in Turbulent Open Channel Flow using Deep Reinforcement Learning

    ORAL

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    Presenters

    • Luca Guastoni

      FLOW, KTH Engineering Mechanics

    Authors

    • Luca Guastoni

      FLOW, KTH Engineering Mechanics

    • Jean Rabault

      Norwegian Metereological Institute

    • Ali Ghadirzadeh

      School Elect. Eng. and Comp. Sci., KTH

    • Philipp Schlatter

      KTH, FLOW, KTH Engineering Mechanics, KTH Engineering Mechanics, Royal Institute of Technology, KTH Engineering Mechanics

    • Hossein Azizpour

      School Elect. Eng. and Comp. Sci., KTH

    • Ricardo Vinuesa

      KTH, KTH Royal Institute of Technology, FLOW, KTH Engineering Mechanics

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  • Drag-reducing flow structure modification generated by spanwise traveling surface waves

    ORAL

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    Publication: E. Mäteling, M. Albers, and W. Schröder. "Why spanwise travelling transversal surface waves promote drag reduction", submitted to Journal of Fluid Mechanics.

    Presenters

    • Esther Mäteling

      RWTH Aachen University, Institute of Aerodynamics

    Authors

    • Esther Mäteling

      RWTH Aachen University, Institute of Aerodynamics

    • Marian Albers

      RWTH Aachen University

    • Wolfgang Schröder

      RWTH Aachen University

    View abstract →