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Relaminarization phenomena by traveling wave-like control in wall turbulence

Research Project

Project/Area Number 25889018
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Fluid engineering
Research InstitutionTokyo University of Agriculture and Technology

Principal Investigator

MAMORI Hiroya  東京農工大学, 工学(系)研究科(研究院), 特任助教 (80706383)

Project Period (FY) 2013-08-30 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords乱流制御 / 抵抗低減 / 数値シミュレーション / 流体工学 / 再層流化 / 乱流の再層流化制御 / 流れの数値シミュレーション
Outline of Final Research Achievements

Skin-friction drag reduction control of wall turbulence is expected to contribute to reduce transport cost. In this study, a traveling wave-like control from walls is focused. The traveling control induces a relaminarization phenomenon in wall turbulence. Although a mechanism of the relaminarization phenomenon has not yet been elucidated, previous studies showed that the spatial development of the control effect played important role. Therefore, in this study we made numerical simulations and experiments in order to clarify the spatial development effect on the relaminarization phenomenon. The numerical simulation shows that vortical structure gradually decreases in the downstream direction and the process is clearly observed.
Although a similar tendency is obtained in experiments, the control effect attenuates at the downstream region since the wave amplitude decreases.

Report

(3 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Annual Research Report
  • Research Products

    (7 results)

All 2014 Other

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Acknowledgement Compliant: 1 results) Presentation (5 results) (of which Invited: 2 results) Remarks (1 results)

  • [Journal Article] Drag reduction effect by a wave-like wall-normal body force in a turbulent channel flow2014

    • Author(s)
      H. Mamori and K. Fukagata
    • Journal Title

      Phys. Fluids

      Volume: 26 Issue: 11 Pages: 115104-115104

    • DOI

      10.1063/1.4901186

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] Drag reduction effect and relaminarization phenomena by traveling wave-like control in turbulent channel flow2014

    • Author(s)
      H. Mamori, K. Iwamoto, and A. Murata
    • Organizer
      Korea-Japan CFD Workshop 2014
    • Place of Presentation
      晋州(韓国)
    • Year and Date
      2014-11-13
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] 進行波状壁面変形による壁面近傍の乱れ抑制効果のPIV計測2014

    • Author(s)
      石渡悠歩,守裕也,岩本薫,村田章
    • Organizer
      第92期日本機械学会流体工学部門講演会
    • Place of Presentation
      富山大学(富山県富山市)
    • Year and Date
      2014-10-25
    • Related Report
      2014 Annual Research Report
  • [Presentation] 平行平板間乱流における進行波状外力による抵抗低減効果の直接数値計算2014

    • Author(s)
      守裕也、深潟康二
    • Organizer
      第92期日本機械学会流体工学部門講演会
    • Place of Presentation
      富山大学(富山県富山市)
    • Year and Date
      2014-10-25
    • Related Report
      2014 Annual Research Report
  • [Presentation] PIV measurement for turbulent drag-reducing channel flow influenced by traveling wave-like wall deformation2014

    • Author(s)
      Y. Ishiwata, H. Mamori, K. Iwamoto, and A. Murata
    • Organizer
      10th International ERCOFTAC Symposium on Engineering Turbulence Modelling and Measurements (ETMM 10)
    • Place of Presentation
      マルベーリャ(スペイン)
    • Year and Date
      2014-09-17 – 2014-09-19
    • Related Report
      2014 Annual Research Report
  • [Presentation] 壁面進行波状プレデターミンド制御による乱流摩擦抵抗低減及び再層流化現象

    • Author(s)
      守裕也,岩本薫,村田章
    • Organizer
      RIAM 研究集会 壁乱流における大規模構造の統計法則と動力学に果たす役割
    • Place of Presentation
      九州大学応用力学研究所
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Remarks] 東京農工大学機械システム工学科 岩本研究室HP

    • URL

      http://iwamoto.lab.tuat.ac.jp/

    • Related Report
      2013 Annual Research Report

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Published: 2013-09-12   Modified: 2019-07-29  

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