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Vorticity Growth Mechanism in Vicinity of Wall of Elasticity and Motion

Research Project

Project/Area Number 17K06161
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Fluid engineering
Research InstitutionKyushu Institute of Technology

Principal Investigator

Fuchiwaki Masaki  九州工業大学, 大学院情報工学研究院, 教授 (60346864)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords非定常流れ / はく離 / 翼 / 非定常運動 / 渦 / 流体工学 / 流体計測
Outline of Final Research Achievements

The growth Mechanism in the vorticity in a vicinity of the wall of an elastic airfoil is investigated by FSI simulation using ANSYS 17.0/ANSYS CFX 17.0 and PIV measurement. The large spatial gradient region on the wall is formed by the elastic deformation in the elastic airfoil. When the spatial gradient on the wall becomes also large, the vorticity with clockwise rotation becomes wider and thicker. When the time variation of the spatial gradient on the wall changes linearly, the vorticity on the wall grows and moves to the trailing edge. On the other hand, when the time variation of the spatial gradient on the wall becomes constant, the vorticity on the wall grows but it stays on the wall. That is, the spatial gradient on the wall is a key parameter for the growth of the vorticity.

Academic Significance and Societal Importance of the Research Achievements

弾性運動体まわりの流れ場に関する研究は,近年,大型産業機器だけでなく,小型飛翔体および生体模倣ロボットの観点からも注目されているが,そのマクロな構造や流体力特性に終始しており,微視的視点に立ったメカニズムから追求しようとする着想は知見しない.本研究成果である渦度の成長メカニズムの解明は,マクロな渦構造の起源の解明でもあり,今後,流体工学に関する多種の機器の設計・開発に利用可能となる.また,弾性運動体まわりの流れ場は,変形する壁面上に発達する境界層,渦度の成長,はく離への影響という現実的に抱えられる流体構造連成問題であり,この問題の解決は,今後の流体工学,さらには,「工学」の進歩に繋がる.

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (12 results)

All 2019 2018 2017

All Presentation (12 results) (of which Int'l Joint Research: 4 results)

  • [Presentation] Vorticity Growth Process on a Wall of an Elastic Moving Airfoil2019

    • Author(s)
      Masaki Fuchiwaki and Takahide Tabata
    • Organizer
      The 15th Asian Symposium on Visualization (ASV15)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 運動翼の弾性変形が作り出す渦度とその成長2019

    • Author(s)
      刀根千玖沙,渕脇正樹
    • Organizer
      日本機械学会2019年度年次大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 弾性運動翼壁面上の渦度の成長過程2019

    • Author(s)
      刀根千玖沙,渕脇正樹
    • Organizer
      日本機械学会第97期流体工学部門講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Dynamic Behavior of Leading Edge vortex and Vorticity on Suction Surface of a Heaving Elastic Airfoil2018

    • Author(s)
      Masaki Fuchiwaki
    • Organizer
      IUTAM Symposium on Critical flow dynamics involving moving/deformable structures with design applications
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Growth of Vortcity in a Vicinity of Wall of an Elastic Moving Airfoil2018

    • Author(s)
      Masaki. Fuchiwaki, Aphaiwong Junchangpood
    • Organizer
      The 9th TSME International Conference on Mechanical Engineering
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 弾性運動翼壁面上の渦度の成長2018

    • Author(s)
      重信樹,渕脇正樹
    • Organizer
      日本機械学会2018年度年次大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 弾性運動翼壁面上を発達する渦度2018

    • Author(s)
      刀根千玖沙,渕脇正樹
    • Organizer
      日本機械学会九州学生会第50回学生員卒業研究発表講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] 渦法による運動翼まわりの流れ解析2018

    • Author(s)
      大井 貴登,渕脇正樹
    • Organizer
      日本機械学会九州学生会第50回学生員卒業研究発表講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] Dynamic Behavior of Vortices Rolled up from a Heaving Elastic Airfoil by a FSI simulation2017

    • Author(s)
      Masaki Fuchiwaki, Aphaiwong Junchangpood
    • Organizer
      The 8th TSME International Conference on Mechanical Engineering
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 弾性運動翼の弾性変形部壁面近傍の渦度の成長2017

    • Author(s)
      池田拓士,渕脇正樹
    • Organizer
      2017年可視化情報全国講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] はく離領域にてヒービング運動する弾性翼後縁の弾性変形とその非定常揚力2017

    • Author(s)
      池田拓士,渕脇正樹
    • Organizer
      日本機械学会2017年度年次大会
    • Related Report
      2017 Research-status Report
  • [Presentation] ヒービング運動翼の前縁はく離渦とその背面を成長する渦度2017

    • Author(s)
      重信樹,渕脇正樹
    • Organizer
      日本機械学会九州学生会第49回学生員卒業研究発表講演会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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