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2013 Fiscal Year Final Research Report

Hybrid simulations for the mechanical degradation of polymer solution by turbulence

Research Project

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Project/Area Number 23760156
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Fluid engineering
Research InstitutionNagoya Institute of Technology

Principal Investigator

WATANABE Takeshi  名古屋工業大学, 工学(系)研究科(研究院), 准教授 (30345946)

Project Period (FY) 2011 – 2013
Keywords高分子溶液 / 乱流 / ハイブリッド計算 / 大規模並列計算
Research Abstract

In this study we examined the mechanical degradation of polymer solution by turbulence and its effects on turbulence statistics by performing the numerical simulations which include the cut-off process of long-chain polymers. It is known that the kinetic energy dissipation of turbulent flows is reduced by polymer additives. It was found that the longer chain polymers have larger influence on the turbulence statistics like the kinetic energy dissipation. When the elasticity of polymers was much stronger, turbulent motions were maintained by stretching polymers even when the turbulence sufficiently decayed. Then the kinetic energy spectrum showed the characteristic power-law decay in the wavenumber range below the Kolmogorov scale. We also found that the reduction rate of the kinetic energy dissipation was gradually decreased with time due to the decreasing of the number of longer chain polymers by cutting.

  • Research Products

    (28 results)

All 2014 2013 2012 2011

All Journal Article (11 results) Presentation (17 results)

  • [Journal Article] 乱流の減衰過程に及ぼす高分子の影響2014

    • Author(s)
      渡邊威,後藤俊幸
    • Journal Title

      京都大学数理解析研究所講究録

      Volume: 1882 Pages: 55-64

  • [Journal Article] Power-law spectra formed by stretching polymers in decaying isotropic turbulence2014

    • Author(s)
      Takeshi Watanabe and Toshiyuki Gotoh
    • Journal Title

      Phys Fluids

      Volume: 26 Pages: 035110

  • [Journal Article] Universal spectrum in the infrared range of two-dimensional turbulence flows2014

    • Author(s)
      Takahiro Iwayama and Takeshi Watanabe
    • Journal Title

      Phys Fluids

      Volume: 26 Pages: 025105

  • [Journal Article] Spectrum of passive scalar at very high Schmidt number in turbulence2014

    • Author(s)
      T. Gotoh, T. Watanabe and H. Miura
    • Journal Title

      Plasma and Fusion Research

      Volume: 9 Pages: 3401019

  • [Journal Article] Kinetic energy spectrum of low-Reynolds-number turbulence with polymer additives2013

    • Author(s)
      Takeshi Watanabe and Toshiyuki Gotoh
    • Journal Title

      J. Phys. : Conf. Ser

      Volume: 454 Pages: 012007

  • [Journal Article] Taylor-Green流れにおける弾性乱流2013

    • Author(s)
      渡邊威,後藤俊幸
    • Journal Title

      ながれ

      Volume: 第32巻 Pages: 441-448

  • [Journal Article] Hybrid Eulerian-Lagrangian simulations for polymer-turbulence interactions2013

    • Author(s)
      Takeshi Watanabe, Toshiyuki Gotoh
    • Journal Title

      J. Fluid Mech

      Volume: 717 Pages: 535-575

  • [Journal Article] Linear stability analysis of parallel shear flows for an inviscid generalized two-dimensional fluid system2013

    • Author(s)
      Takahiro Iwayama, Masakazu Sueyoshi, Takeshi Watanabe
    • Journal Title

      J. Phys. A : Math. Theor

      Volume: 46 Pages: 65501

  • [Journal Article] Scalar flux in a uniform mean scalar gradient in homogeneous isotropic steady turbulence2012

    • Author(s)
      Toshiyuki Gotoh, Takeshi Watanabe
    • Journal Title

      Physica D

      Volume: 241 Pages: 141-148

  • [Journal Article] Universality and anisotropy in passive scalar fluctuations in turbulence with uniform mean gradient2011

    • Author(s)
      Toshiyuki Gotoh, Takeshi Watanabe, Yuki Suzuki
    • Journal Title

      Journal of Turbulence 12

      Volume: N48

  • [Journal Article] 大規模並列計算による乱流中の高分子モデルの挙動解析2011

    • Author(s)
      渡邊威,後藤俊幸
    • Journal Title

      京都大学数理解析研究所講究録

      Volume: 1711 Pages: 10-23

  • [Presentation] Taylor-Green流れにおける弾性乱流の性質2014

    • Author(s)
      渡邊威,後藤俊幸
    • Organizer
      日本物理学会年会2014
    • Place of Presentation
      東海大学湘南キャンパス
    • Year and Date
      2014-03-28
  • [Presentation] 希薄高分子溶液における乱流のハイブリッドシミュレーション2013

    • Author(s)
      西岡優樹,渡邊威,後藤俊幸
    • Organizer
      日本機械学会第26回計算力学部門講演会
    • Place of Presentation
      佐賀大学
    • Year and Date
      2013-11-02
  • [Presentation] Taylor-Green流れにおける弾性乱流2013

    • Author(s)
      渡邊威,後藤俊幸
    • Organizer
      日本流体力学会年会2013
    • Place of Presentation
      東京農工大学
    • Year and Date
      2013-09-02
  • [Presentation] 希薄高分子溶液における低レイノルズ数乱流の性質2013

    • Author(s)
      渡邊威,後藤俊幸
    • Organizer
      日本物理学会第68回年次大会
    • Place of Presentation
      広島大学
    • Year and Date
      2013-03-26
  • [Presentation] 乱流の減衰過程に及ぼす高分子の影響2013

    • Author(s)
      渡邊威,後藤俊幸
    • Organizer
      京都大学数理解析研究所研究集会「多重物理・多重スケール乱流現象の数理」
    • Place of Presentation
      京都大学
    • Year and Date
      2013-01-09
  • [Presentation] 一様定常乱流の統計性における鎖状高分子の影響2012

    • Author(s)
      土屋勝洋,西岡優樹,渡邊威,後藤俊幸
    • Organizer
      第26回数値流体力学シンポジウム
    • Place of Presentation
      国立オリンピック記念青少年センター
    • Year and Date
      2012-12-18
  • [Presentation] テイラークエット乱流における高分子の影響2012

    • Author(s)
      杉山智哉,後藤俊幸,渡邊威
    • Organizer
      第10回日本流体力学会中部支部講演会
    • Place of Presentation
      稲荷山温泉杏泉閣
    • Year and Date
      2012-11-09
  • [Presentation] Kinetic energy spectrum of the low ReynoIds number turbulence with polymer additives2012

    • Author(s)
      Takeshi Watanabe, Toshiyuki Gotoh
    • Organizer
      CCP2012
    • Place of Presentation
      Nichii Gakka
    • Year and Date
      2012-10-15
  • [Presentation] テイラークエット乱流における高分子の影響2012

    • Author(s)
      杉山智哉,後藤俊幸,渡邊威
    • Organizer
      日本機械学会第25回計算力学講演会
    • Place of Presentation
      神戸ボートアイランド南地区
    • Year and Date
      2012-10-06
  • [Presentation] 高分子添加した乱流のエネルギースペクトルの振る舞い2012

    • Author(s)
      渡邊威,後藤俊幸
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      横浜国立大学
    • Year and Date
      2012-09-19
  • [Presentation] 一様定常乱流の統計性における高分子の影響2011

    • Author(s)
      杉本大輝,渡邊威,後藤俊幸
    • Organizer
      九州大学応用力学研究所共同利用研究集会「乱流現象及び非平衡系の多様性と普遍性」
    • Place of Presentation
      九州大学応用力学研究所
    • Year and Date
      2011-11-10
  • [Presentation] テイラークエット流れにおける高分子の影響2011

    • Author(s)
      金相佑,渡邊威,後藤俊幸
    • Organizer
      九州大学応用力学研究所共同利用研究集会「乱流現象及び非平衡系の多様性と普遍性」
    • Place of Presentation
      九州大学応用力学研究所
    • Year and Date
      2011-11-10
  • [Presentation] 多数の高分子モデルが分散した一様乱流の統計性2011

    • Author(s)
      杉本大輝,渡邊威,後藤俊幸
    • Organizer
      第24回計算力学講演会
    • Place of Presentation
      岡山大学
    • Year and Date
      2011-10-08
  • [Presentation] テイラークエット流れにおける高分子の影響2011

    • Author(s)
      金相佑,渡邊威,後藤俊幸
    • Organizer
      第24回計算力学講演会
    • Place of Presentation
      岡山大学
    • Year and Date
      2011-10-08
  • [Presentation] 一様定常乱流の統計性質への高分子の影響2011

    • Author(s)
      渡邊威,杉本大輝,後藤俊幸
    • Organizer
      日本物理学会2011年秋季大会
    • Place of Presentation
      富山大学五福キャンパス
    • Year and Date
      2011-09-21
  • [Presentation] 高分子溶液乱流の大規模並列数値計算2011

    • Author(s)
      渡邊威
    • Organizer
      第4回NIFS-NIT合同セミナー
    • Place of Presentation
      核融合科学研究所
    • Year and Date
      2011-07-29
  • [Presentation] Hybrid simulations of enormous numbers of polymers dispersed in decaying isotropic turbulence2011

    • Author(s)
      Takeshi Watanabe, Toshiyuki Gotoh
    • Organizer
      Hybrid simulations of enormous numbers of polymers dispersed in decaying isotropic turbulence", ICCES'11
    • Place of Presentation
      Grand Metro Park Hotel, Nanjing China
    • Year and Date
      2011-04-18

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Published: 2015-06-25  

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