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Temporal and spatial multiple states and memory in fully developed turbulence

Research Project

Project/Area Number 16K05490
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Mathematical physics/Fundamental condensed matter physics
Research InstitutionDoshisha University

Principal Investigator

TAKAOKA Masanori  同志社大学, 理工学部, 教授 (20236186)

Co-Investigator(Kenkyū-buntansha) 水野 吉規  同志社大学, 理工学部, 助教 (70402542)
横山 直人  同志社大学, 研究開発推進機構, 嘱託研究員 (80512730)
佐々木 英一  秋田大学, 理工学研究科, 特任助教 (60710811)
Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords流体乱流 / 波動乱流 / ヒステリシス / 非等方性乱流 / 渦構造 / エネルギー輸送 / 波数空間 / 共存 / 回転乱流 / 成層乱流 / 渦柱 / 2次元乱流 / エネルギーフラックス / 多重状態 / 壁乱流 / 回転球殻内乱流 / 臨界波数 / 球殻内乱流 / 二重円筒間乱流 / 自己組織構造 / 柱状渦構造 / 数理物理 / 流体物理 / 乱流
Outline of Final Research Achievements

Coexistence of weak turbulence and strong turbulence is found in the wave motion on a thin elastic plate, and integrated analyses of the energy transfer is performed in both the real space and the wavenumber space. We have shown that hysteretic behaviour in rotating turbulence can be observed even in the fully developed turbulence state. Transition between a columnar vortex in high latitude and a toroidal vortex in low latitude is found in co-rotating spherical Couette flow. Anisotropic wave turbulence in low wavenumber range and isotropic Kolmogorov turbulence in high wavenumber range coexist in such as rotating turbulence and stratified turbulence. We have proposed a method to identify a wavenumber domain for each turbulence and confirmed its efficiency. We have also proposed a method to determine quantitatively energy flux in the wavenumber space, which makes it possible to examine the energy flux along the boundaries among coexisting turbulences.

Academic Significance and Societal Importance of the Research Achievements

弾性薄板の波動では複素振幅に加えてAiryポテンシャルを要素波とすることで非線形エネルギーも含めた詳細釣り合いを成り立たすことが出来、エネルギー輸送を波数空間と実空間の両面から解析する手法を提案し、従来の弱乱流理論に対する1つの拡張可能性を示した。
十分に発達した系のヒステリシスの報告は壁で囲まれた閉じた系のみであったが、回転乱流において開いた系でも同様の現象が起こりうることを示し、研究対象が広がった。
Navier-Stokes方程式の3波相互作用におけるエネルギー収支の不定性を除去する方法を提案し、非等方性乱流においても波数空間のエネルギー輸送を定量的にベクトル場として評価出来るようになった。

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (33 results)

All 2020 2019 2018 2017 2016

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 5 results,  Acknowledgement Compliant: 1 results) Presentation (28 results) (of which Int'l Joint Research: 11 results,  Invited: 2 results)

  • [Journal Article] Energy-based analysis and anisotropic spectral distribution of internal gravity waves in strongly stratified turbulence2019

    • Author(s)
      Yokoyama Naoto、Takaoka Masanori
    • Journal Title

      Physical Review Fluids

      Volume: 4 Issue: 10 Pages: 104602-104602

    • DOI

      10.1103/physrevfluids.4.104602

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Sequential transitions of bathtub vortex flow2017

    • Author(s)
      Jiro Mizushima, Kazuki Abe and Naoto Yokoyama
    • Journal Title

      Physical Review Fluids

      Volume: 2 Issue: 8 Pages: 083903-083903

    • DOI

      10.1103/physrevfluids.2.083903

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Integrated analysis of energy transfers in elastic-wave turbulence2017

    • Author(s)
      Yokoyama Naoto、Takaoka Masanori
    • Journal Title

      Physical Review E

      Volume: 96 Issue: 2 Pages: 023106-023106

    • DOI

      10.1103/physreve.96.023106

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Hysteretic transitions between quasi-two-dimensional flow and three-dimensional flow in forced rotating turbulence2017

    • Author(s)
      Yokoyama Naoto、Takaoka Masanori
    • Journal Title

      Physical Review Fluids

      Volume: 2 Issue: 9 Pages: 092602-092602

    • DOI

      10.1103/physrevfluids.2.092602

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Turbulence in Elastic Waves Governed by Föppl-von Kármán Equation2016

    • Author(s)
      横山直人、高岡正憲
    • Journal Title

      Bulletin of the Japan Society for Industrial and Applied Mathematics

      Volume: 26 Issue: 4 Pages: 15-23

    • DOI

      10.11540/bjsiam.26.4_15

    • NAID

      130007042673

    • ISSN
      2432-1982
    • Year and Date
      2016-12-22
    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] 2次元回転乱流におけるエネルギーの流れ2020

    • Author(s)
      高岡正憲、 横山直人、 佐々木英一
    • Organizer
      日本物理学会第75回年次大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 回転乱流におけるエネルギー輸送と等方化機構2020

    • Author(s)
      横山直人、 高岡正憲
    • Organizer
      日本物理学会第75回年次大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Energy flux vectors in two-dimensional anisotropic turbulence2019

    • Author(s)
      M. Takaoka, N. Yokoyama, E. Sasaki
    • Organizer
      72nd Annual Meeting of the American Physical Society's Division of Fluid Dynamics
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Energy Fluxes in Anisotropic Turbulence2019

    • Author(s)
      N. Yokoyama, M. Takaoka
    • Organizer
      3rd Asia Pacific Conference on Plasma Physics
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 一般化逆行列を用いた回転乱流におけるエネルギーフラックス方向の同定法2019

    • Author(s)
      横山直人、 高岡正憲
    • Organizer
      日本流体力学会年会2019
    • Related Report
      2019 Annual Research Report
  • [Presentation] 2次元非等方乱流におけるエネルギーフラックス場2019

    • Author(s)
      高岡正憲、 横山直人、 佐々木英一
    • Organizer
      日本物理学会2019年秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Energy flux in anisotropic turbulence2019

    • Author(s)
      N. Yokoyama, M. Takaoka
    • Organizer
      17th European Turbulence Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Energy flux vector in a shell model of 2D rotating turbulence2019

    • Author(s)
      M. Takaoka, N. Yokoyama, E. Sasaki
    • Organizer
      17th European Turbulence Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 2次元乱流のモデル方程式におけるエネルギーフラックスベクトル2019

    • Author(s)
      高岡正憲、横山直人、佐々木英一
    • Organizer
      日本物理学会第74回年次大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 非等方乱流におけるエネルギーフラックス方向の同定2019

    • Author(s)
      横山直人、高岡正憲
    • Organizer
      日本物理学会第74回年次大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Energy budget in stratified turbulence2018

    • Author(s)
      N. Yokoyama, M. Takaoka
    • Organizer
      京都大学数理解析研究所共同研究
    • Related Report
      2018 Research-status Report
  • [Presentation] 成層乱流における異種乱流の共存2018

    • Author(s)
      横山直人
    • Organizer
      京都大学数理解析研究所共同研究
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] 非等方乱流におけるエネルギーフラックスの方向分布2018

    • Author(s)
      横山直人、高岡正憲
    • Organizer
      日本流体力学会年会
    • Related Report
      2018 Research-status Report
  • [Presentation] Directional energy flux in anisotropic turbulence2018

    • Author(s)
      N. Yokoyama, M. Takaoka
    • Organizer
      71st Annual Meeting of the APS Division of Fluid Dynamics
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 回転乱流におけるエネルギー散逸の役割2018

    • Author(s)
      横山直人、高岡正憲
    • Organizer
      日本物理学会第73回年次大会
    • Related Report
      2017 Research-status Report
  • [Presentation] 弾性波動乱流における外力とエネルギー輸送の関係2018

    • Author(s)
      高岡正憲、横山直人
    • Organizer
      日本物理学会第73回年次大会
    • Related Report
      2017 Research-status Report
  • [Presentation] Memories of initial conditions and large-scale columnar vortices in forced rotating turbulence2017

    • Author(s)
      M.Takaoka, N. Yokoyama
    • Organizer
      16th European Turbulence Conference
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Separation of gravity waves in stratified turbulence2017

    • Author(s)
      N.Yokoyama, M. Takaoka
    • Organizer
      16th European Turbulence Conference
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 回転乱流のエネルギー輸送2017

    • Author(s)
      横山直人、高岡正憲
    • Organizer
      日本流体力学会年会2017
    • Related Report
      2017 Research-status Report
  • [Presentation] 弾性波動乱流の複素振幅における外力や散逸について2017

    • Author(s)
      高岡正憲、横山直人
    • Organizer
      日本物理学会2017年秋季大会
    • Related Report
      2017 Research-status Report
  • [Presentation] 回転乱流のエネルギー輸送2017

    • Author(s)
      横山直人、高岡正憲
    • Organizer
      日本物理学会2017年秋季大会
    • Related Report
      2017 Research-status Report
  • [Presentation] Identification of weak-turbulent wave-number region in stratified turbulence2017

    • Author(s)
      N. Yokoyama, M.Takaoka
    • Organizer
      70th Annual Meeting of the APS Division of Fluid Dynamics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Large-scale columnar vortices in rotating turbulence2016

    • Author(s)
      Naoto Yokoyama, Masanori Takaoka
    • Organizer
      69th Annual Meeting of the APS Division of Fluid Dynamics
    • Place of Presentation
      Portland(USA)
    • Year and Date
      2016-11-20
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] 矩形断面容器中でのバスタブ渦の発生と遷移2016

    • Author(s)
      松田玲依、水島二郎、横山直人
    • Organizer
      日本流体力学会年会2016
    • Place of Presentation
      名古屋工業大学(愛知県名古屋市)
    • Year and Date
      2016-09-26
    • Related Report
      2016 Research-status Report
  • [Presentation] 高波数外力で維持される弾性波動乱流における初期条件依存性2016

    • Author(s)
      高岡正憲、横山直人
    • Organizer
      日本物理学会2016年秋季大会
    • Place of Presentation
      金沢大学(石川県金沢市)
    • Year and Date
      2016-09-13
    • Related Report
      2016 Research-status Report
  • [Presentation] 一様回転乱流における大規模渦柱の回転方向の選択機構2016

    • Author(s)
      横山直人、高岡正憲
    • Organizer
      日本物理学会2016年秋季大会
    • Place of Presentation
      金沢大学(石川県金沢市)
    • Year and Date
      2016-09-13
    • Related Report
      2016 Research-status Report
  • [Presentation] Dependence of energy spectra on forcing scales in elastic wave turbulence2016

    • Author(s)
      Masanori Takaoka, Naoto Yokoyama
    • Organizer
      24th International Congress of Theoretical and Applied Mechanics
    • Place of Presentation
      Montreal (Canada)
    • Year and Date
      2016-08-21
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Initial-condition dependence of large-scale structures in rotating turbulence2016

    • Author(s)
      Naoto Yokoyama, Masanori Takaoka
    • Organizer
      24th International Congress of Theoretical and Applied Mechanics
    • Place of Presentation
      Montreal (Canada)
    • Year and Date
      2016-08-21
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2021-02-19  

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