• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Exeprimental study of turbulence transport with symmetry breaking

Research Project

Project/Area Number 26610194
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Plasma science
Research InstitutionNational Institute for Fusion Science

Principal Investigator

Nagaoka Kenichi  核融合科学研究所, ヘリカル研究部, 准教授 (20353443)

Co-Investigator(Renkei-kenkyūsha) HIDAKA Yoshiki  九州大学, 工学研究院・エネルギー量子工学部門, 助教 (70274511)
TERASAKA Kenichiro  九州大学, 総合理工学研究院・エネルギー科学部門, 助教 (50597127)
MASADA Yohei  愛知教育大学, 教育学部・自然科学系, 講師 (30590608)
Research Collaborator YOSHIMURA Shinji  核融合科学研究所, 高密度プラズマ物理研究系, 准教授 (50311204)
HOTTA Sayaka  名古屋大学, 大学院理学研究科・素粒子宇宙物理学専攻
Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords乱流 / 構造形成 / 輸送 / 対称性の破れ / 回転乱流 / 電気対流 / 乱流構造形成 / 対称性 / 回転 / 乱流輸送 / 対象性の破れ / 軸性ベクトル場 / スカラー場
Outline of Final Research Achievements

Turbulent transport and structure formation was experimentally investigated using electro-hydrodynamic convection (EC) with symmetry breaking. We applied the rotation in the system for breaking symmetry, then the turbulent transport efficiencies were compared between parallel and perpendicular to the axis of applied rotation. Because of large scattering among particles traced in the EC, any effects of rotation on the turbulent transport were identified. On the other hand, the wave number spectrum of turbulent velocity parallel to the line of sight have a different slop with respect to the wave number between parallel and perpendicular to the axis of rotation, which is caused by inverse-cascade in the direction parallel to the rotation axis. We have identified for the first time in the EC the stretching of turbulent vortex in the direction parallel to the rotation axis, which is identical to the tendency observed in normal fluid turbulence such as Taylor column.

Report

(4 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (7 results)

All 2017 2016 2015 2014

All Presentation (7 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Presentation] 液晶電気対流を用いた回転乱流の拡散特性2017

    • Author(s)
      堀田彩、永岡賢一、吉村信次、日高芳樹、寺坂健一郎、小澤直也
    • Organizer
      物理学会2016年度春季
    • Place of Presentation
      大阪大学
    • Year and Date
      2017-03-17
    • Related Report
      2016 Annual Research Report
  • [Presentation] 乱流拡散への回転の影響の実験観測2016

    • Author(s)
      永岡 賢一, 堀田 彩, 吉村 信次, 日高 芳樹, 前田 和也, 小澤 直也, 寺坂 健一郎, 大島 慎介, 小林 達哉
    • Organizer
      日本物理学会(秋)
    • Place of Presentation
      東京
    • Year and Date
      2016-09-13
    • Related Report
      2016 Annual Research Report
  • [Presentation] Experimental Study of Turbulent Transport and the Effect of Rotation in an Eelectro-Convection2016

    • Author(s)
      K. Nagaoka, S. Yoshimura, S. Hotta, N. Ozawa, Y. Hidaka, K. Maeda, K. Terasaka, S. Ohshima, T. Kobayashi, M. Kubo, R. Ishikawa and N. Yokoi
    • Organizer
      East-Asia School and Workshop on Laboratory, Space, and Astrophysical Plasmas
    • Place of Presentation
      Tsukuba
    • Year and Date
      2016-07-11
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 系の回転が乱流スペクトルと乱流輸送に与える影響2016

    • Author(s)
      永岡賢一、吉村信次、小林達哉、日高芳樹、前田和也、寺坂健一郎、大島慎介
    • Organizer
      日本天文学会
    • Place of Presentation
      首都大学東京
    • Year and Date
      2016-03-14
    • Related Report
      2015 Research-status Report
  • [Presentation] 液晶電気対流による乱流の構造 と輸送現象についての研究2015

    • Author(s)
      日高芳樹, 前田和也, 永岡賢一, 吉村信次, 寺坂健一郎, 岡部弘高, 原一広
    • Organizer
      2015年日本液晶学会討論会
    • Place of Presentation
      東工大
    • Year and Date
      2015-09-05
    • Related Report
      2015 Research-status Report
  • [Presentation] 回転流体中の乱流輸送の基礎実験2014

    • Author(s)
      永岡 賢一, 吉村 信次, 日高 芳樹, 寺坂 健一郎, 小林 達哉, 横井 喜充, 政田 洋平, 三浦 英昭, 久保 雅仁, 石川 遼子
    • Organizer
      Plasma Conference 2014
    • Place of Presentation
      朱鷺メッセ、新潟市
    • Year and Date
      2014-11-18 – 2014-11-21
    • Related Report
      2014 Research-status Report
  • [Presentation] A New Experimental Approach to Turbulent Transport in Complex Systems2014

    • Author(s)
      K. Nagaoka, S. Yoshimura, Y. Masada, Y. Hidaka, N. Yokoi, S. Tsuneta, M. Kubo, R. Ishikawa, K. Terasaka, H. Miura
    • Organizer
      日本地球惑星科学連合 2014
    • Place of Presentation
      パシフィコ横浜、横浜市
    • Year and Date
      2014-04-28 – 2014-05-02
    • Related Report
      2014 Research-status Report
    • Invited

URL: 

Published: 2014-04-04   Modified: 2018-03-22  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi