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Mathematical Analysis of Model Equations of Multi-Phase Flow Phenomena in Porous Media

Research Project

Project/Area Number 17540207
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Global analysis
Research InstitutionOsaka Electro-Communication University

Principal Investigator

ASAKURA Fumioki  Osaka Electro-Communication University, 工学部, 教授 (20140238)

Co-Investigator(Kenkyū-buntansha) MANDAI Takeshi  大阪電気通信大学, 工学部, 教授 (10181843)
SAKATA Sadahisa  大阪電気通信大学, 医療福祉工学部, 教授 (60175362)
YAMAHARA Hideo  大阪電気通信大学, 工学部, 准教授 (30103344)
Project Period (FY) 2005 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥3,690,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2008: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2007: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2006: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2005: ¥1,200,000 (Direct Cost: ¥1,200,000)
Keywords非線形現象 / 偏微分方程式 / 保存 / 双曲系 / 衝撃波 / エントロピー / 保存則 / 気体力学 / Darcyの法則 / 多相流体 / 波面追跡法
Research Abstract

1. 多孔性媒質における3相流(例えば, 空気, 油, 水)のStoneモデル方程式系において, ほとんどの場合に, 方程式が楕円型となる領域が存在することを証明した. これは, Stoneモデル方程式系の数値計算においては, 複雑な不安定性が発生することを示す.
2. 上記のStoneモデル方程式系を臍点の付近で近似する保存則系において, Liu-Oleinik条件をみたす衝撃波で接続される2つの状態が, 粘性衝撃波解で接続されない条件を与えた. これは, このような方程式系においては, 衝撃波の許容条件が代数的には定まらないことを示す.
3. 空間1次元の等温流体の運動方程式において, 初期状態が温度の異なる多数の相を持つ場合の初期値問題を研究し, 温度の変化量と初期値の変動量の積が十分に小さいときの, 非線形波(希薄波と衝撃波)の相互作用量の評価を得た. 相が一つの場合に比べて, 相互作用は非常に複雑になる.

Report

(5 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • 2005 Annual Research Report
  • Research Products

    (18 results)

All 2009 2008 2007 2006 2005

All Journal Article (13 results) (of which Peer Reviewed: 10 results) Presentation (4 results) Book (1 results)

  • [Journal Article] Viscous shock profiles for 2x2 systems of hyperbolic conservation laws with an umbilic point2009

    • Author(s)
      F. Asakura, M. Yamazaki
    • Journal Title

      Journal of Hyperbolic Differential Equations Vol. 6(掲載予定)

    • Related Report
      2008 Annual Research Report 2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Viscous shock profiles for 2x2 systems of hyperbolic conservation laws with quadratic flux functions2009

    • Author(s)
      F. Asakura, M. Yamazaki
    • Journal Title

      数理解析研究所講究録 1631

      Pages: 47-59

    • Related Report
      2008 Annual Research Report 2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Survey of admissible shock waves for 2x2 systems of conservation laws with an umbilic point2007

    • Author(s)
      F. Asakura, M. Yamazaki
    • Journal Title

      Advanced Studies in Pure Mathematics 47-1

      Pages: 87-97

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Global Fuchsian Goursat Problem in the Class of Holomorphic-Gevrey Functions2007

    • Author(s)
      M. Belarbi, T. Mandai, M. Mechab
    • Journal Title

      Osaka J. Math. 44-2

      Pages: 255-283

    • NAID

      120004841971

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Blind sourceseparation using time-frequency information matrix given by several wavelet transforms2007

    • Author(s)
      R. Ashino, K. Fujita, T. Mandai, A. Morimoto, K. Nishihara
    • Journal Title

      Information: An International Journal 10-5

      Pages: 555-568

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Survey of admissible shock waves for 2 times 2 systems of conservation laws with an umbilic point2007

    • Author(s)
      Asakura, Fumioki-Yamazaki, Mitsuru
    • Journal Title

      Advanced Studies in Pure Mathematics 47-1

      Pages: 87-97

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Global Fuchsian Goursat Problem in the Class of Holomorphic-Gevrey Functions2007

    • Author(s)
      Belarbi, Malika-Mandai, Takeshi-Mechab, Mustapha
    • Journal Title

      Osaka J.Math 44-2

      Pages: 255-288

    • NAID

      120004841971

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Blind source separation using time-frequency information matrix given by several wavelet transforms2007

    • Author(s)
      Ashino, Ryuichi-Fujita, Keiko-Mandai, Takeshi-Morimoto, Akira-Kiyoaki, Nishihara
    • Journal Title

      Information:An Intenational Journal 10-5

      Pages: 555-568

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Survey of admissible shock waves for 2 times 2 systems of conservation laws with an umbilic point2007

    • Author(s)
      F.ASAKURA, M.YAMAZAKI
    • Journal Title

      Advanced Studies in Pure Mathematics, 日本数学会(査読終了,受理) (発行予定)(未定)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Existence of Viscous Profiles for Conservation Laws with an Umbilic Point2006

    • Author(s)
      F. Asakura, M. Yamazaki
    • Journal Title

      Hyperbolic Problems: Theory, Numerics and Applications(Yokohama Publishers) Vol. 1

      Pages: 279-286

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Wave-front tracking for the equations of non-isentropic Gas Dynamics2006

    • Author(s)
      F. Asakura
    • Journal Title

      数理解析研究所講究録 1495

      Pages: 78-91

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Existence of Viscous Profiles for Conservation Laws with an Umbilic Point2006

    • Author(s)
      F.ASAKURA, M.YAMAZAKI
    • Journal Title

      Hyperbolic Problems : Theory, Numerics and Applications, Yokohama Publishers. Vol.1

      Pages: 279-286

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Geometry of Hugoniot Curves in 2x2 systems of Hyperbolic Conservation Laws with Quadratic Flux2005

    • Author(s)
      Fumioki Asakura, Mitsuru Yamazaki
    • Journal Title

      IMA Journal of Applied Mathematics 70

      Pages: 700-722

    • Related Report
      2005 Annual Research Report
  • [Presentation] Path decomposition method in wave-front tracking scheme2009

    • Author(s)
      F. Asakura
    • Organizer
      Himeji Conference on Partial Differential Equations
    • Place of Presentation
      イーグレ姫路, 姫路
    • Year and Date
      2009-02-20
    • Related Report
      2008 Final Research Report
  • [Presentation] Viscous shock profiles for 2x2 systems of hyperbolic conservation laws with quadratic flux functions2008

    • Author(s)
      F. Asakura
    • Organizer
      京都大学数理解析研究所研究集会「流体と気体の数学解析」
    • Year and Date
      2008-07-12
    • Related Report
      2008 Final Research Report
  • [Presentation] Wave-front tracking method for the equations of non-isentropic Gas Dynamics2006

    • Author(s)
      F. Asakura
    • Organizer
      10th International Conference on Hyperbolic Problems -Theory, Numeric and Application
    • Place of Presentation
      ENS Lyon, France
    • Related Report
      2008 Final Research Report
  • [Presentation] Wave-front tracking for the equations of non-isentropic Gas Dynamics2005

    • Author(s)
      F. Asakura
    • Organizer
      京都大学数理解析研究所研究集会「流体と気体の数学解析」
    • Year and Date
      2005-07-12
    • Related Report
      2008 Final Research Report
  • [Book] Hyperbolic Problems: Theory, Numerics and Applications, 国際会議 : 10th International Conference on Hyperbolic Problems - Theory, Numerics and Applications - (Osaka) の論文集. I, II 2巻, 掲載論文数106編.2008

    • Author(s)
      F. Asakura
    • Total Pages
      886
    • Publisher
      Yokohama Publishers
    • Related Report
      2008 Final Research Report

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Published: 2005-04-01   Modified: 2016-04-21  

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