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Forced Convection Heat Transfer Characteristics of Slush Nitrogen in Turbulent Pipe Flows

Research Project

Project/Area Number 18360096
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Thermal engineering
Research InstitutionTohoku University

Principal Investigator

OHIRA Katsuhide  Tohoku University, Tohoku University, Institute of Fluid Science, Professor (30375117)

Co-Investigator(Kenkyū-buntansha) ISHIMOTO Jun  Tohoku University, Institute of Fluid Science, Associate Professor (10282005)
Project Period (FY) 2006 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥9,330,000 (Direct Cost: ¥8,400,000、Indirect Cost: ¥930,000)
Fiscal Year 2007: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2006: ¥5,300,000 (Direct Cost: ¥5,300,000)
KeywordsCryogenic Fluid / Forced Convection Heat Transfer / Two-phase Solid-liquid Flow / Slush Nitrogen / Slush Hydrogen / Renewable Energy / Reusable Space Shuttle / Superconducting Equipment / 水素
Research Abstract

Slush Fluids, such as slush hydrogen and slush nitrogen, are two-phase (solid-liquid) single-component cryogenic fluids containing solid particles in a liquid. The objectives of the present study are to investigate the forced convection heat transfer characteristic and thermo-fluid instability of slush nitrogen flowing in a pipe, and to develop the numerical code to evaluate the thermo-fluid phenomenon of the slush fluid flowing in a pipe.
Experimental tests were performed with the slush nitrogen in the ranges of solid fraction from 0 to 40 wt% and mean velocity from 1 to 6m/s to obtain both the forced convection heat transfer coefficient and the frictional pressure drop flowing in a horizontal copper pipe. Compared with the experimental results of subcooled liquid nitrogen, the deterioration phenomena of heat transfer coefficients for slush nitrogen caused by the pressure drop reduction were found and cleared in the present study. This is the important and useful result for applying the slush fluid as a refrigerant to superconducting equipments.
Three-dimensional numerical simulation method including the gravity effect based on the two-fluid model has been developed to clarify the characteristics of the cryogenic two-phase slush fluid in a straight pipe flow. It was found that the calculated results were in good agreement with the velocity distributions of solid particles measured by the new PIV (Particle Image Velocimetry) method. In consequence, the developed numerical code has been verified to be able to calculate the slush flow characteristics with sufficient accuracy.

Report

(3 results)
  • 2007 Annual Research Report   Final Research Report Summary
  • 2006 Annual Research Report
  • Research Products

    (35 results)

All 2008 2007 2006

All Journal Article (27 results) (of which Peer Reviewed: 2 results) Presentation (8 results)

  • [Journal Article] Heat Transfer Characteristics of Slush Nitrogen in Turbulent Pipe Flows2008

    • Author(s)
      Katsuhide Ohira
    • Journal Title

      Advances in Gryogenic Engineering 53

      Pages: 1141-1148

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] スラッシュ窒素の圧力損失低減効果と熱伝達特性2008

    • Author(s)
      大平 勝秀
    • Journal Title

      第78回2008年度春季低温工学・超電導学会講演概要集 (印刷中)

    • NAID

      10021923149

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Annual Research Report 2007 Final Research Report Summary
  • [Journal Article] Heat Transfer Characteristics of Slush Nitrogen in Turbulent Pipe Flows2008

    • Author(s)
      K. Ohira
    • Journal Title

      Advances in Cryogenic Engineering Vol. 53

      Pages: 1141-1148

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Pressure Drop Reduction and Heat Transfer Characteristics of Slush Nitrogen in Pipe Flows2008

    • Author(s)
      K. Ohira
    • Journal Title

      Abstracts of Cryogenic Society of Japan Conference Vol. 78(Printing in Japanese)

    • NAID

      10021923149

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Heat Transfer Characteristics of Slush Nitrogen in Turbulent Pipe Flows2008

    • Author(s)
      Katsuhide Ohira
    • Journal Title

      Advances in Cryogenic Engineering 53

      Pages: 1141-1148

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] スラッシュ窒素の水平管内二相流動特性に関する数値解析2007

    • Author(s)
      向井 康晃
    • Journal Title

      日本混相流学会年会講演会2007講演論文集

      Pages: 54-55

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Annual Research Report 2007 Final Research Report Summary
  • [Journal Article] スラッシュ窒素の管内流動特性に関する数値解析2007

    • Author(s)
      向井 康晃
    • Journal Title

      第77回2007年度秋季低温工学・超電導学会講演概要集

      Pages: 284-284

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Annual Research Report 2007 Final Research Report Summary
  • [Journal Article] 水平管内を流動するスラッシュ窒素の熱伝達特性2007

    • Author(s)
      高橋 則史
    • Journal Title

      第77回2007年度秋季低温工学・超電導学会講演概要集

      Pages: 285-285

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Annual Research Report 2007 Final Research Report Summary
  • [Journal Article] スラッシュ水素実用化のための熱・流動現象の研究2007

    • Author(s)
      大平 勝秀
    • Journal Title

      第77回2007年度秋季低温工学・超電導学会講演概要集

      Pages: 287-287

    • NAID

      10019982092

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Annual Research Report 2007 Final Research Report Summary
  • [Journal Article] スラッシュ窒素の管内熱・流動特性にっいて2007

    • Author(s)
      大平 勝秀
    • Journal Title

      第27回水素エネルギー協会大会予稿集

      Pages: 61-64

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Numerical Study on Solid Particle Behavior of Slush Nitrogen Two-Phase Flow in a Horizontal Pipe2007

    • Author(s)
      Yasuaki Mukai
    • Journal Title

      Proceedings of the Seventh International Symposium on Advanced Fluid Information

      Pages: 296-297

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Experimental Study of Heat Transfer in Slush Nitrogen Pipe Flow2007

    • Author(s)
      Norifumi Takahashi
    • Journal Title

      Proceedings of the Seventh International Symposium on Advanced Fluid Information

      Pages: 298-299

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Numerical Study of Slush Nitrogen Two-phase Flow Characteristics in a Horizontal Pipe2007

    • Author(s)
      Y. Mukai
    • Journal Title

      The Japanese Society for Multiphase Flow Annual Meeting 2007 (in Japanese)

      Pages: 54-55

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Numerical Study of Slush Nitrogen Pipe Flow Characteristics2007

    • Author(s)
      Y. Mukai
    • Journal Title

      Abstracts of Cryogenic Society of Japan Conference (in Japanese) Vol. 77

      Pages: 284-284

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Heat Transfer Characteristics of Slush Nitrogen in Horizontal Straight Pipe2007

    • Author(s)
      N. Takahashi
    • Journal Title

      Abstracts of Cryogenic Society of Japan Conference (in Japanese) Vol. 77

      Pages: 285-285

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Basic Study of Heat Transfer and Flow Characteristics for Practical Applications of Slush Hydrogen2007

    • Author(s)
      K. Ohira
    • Journal Title

      Abstracts of Cryogenic Society of Japan Conference (in Japanese) Vol. 77

      Pages: 287-287

    • NAID

      10019982092

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Heat Transfer and Flow Characteristics in Slush Nitrogen Pipe Flow2007

    • Author(s)
      K. Ohira
    • Journal Title

      Proceedings of the 27th Hydrogen Energy Systems Society of Japan (HESS) Conference (in Japanese)

      Pages: 61-64

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Numerical Study on Solid Particle Behavior of Slush Nitrogen Two-Phase Flow in a Horizontal Pipe2007

    • Author(s)
      Y. Mukai
    • Journal Title

      Proceedings of the Seventh International Symposium on Advanced Fluid Information

      Pages: 296-297

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Experimental Study of Heat Transfer in Slush Nitrogen Pipe Flow2007

    • Author(s)
      N. Takahashi
    • Journal Title

      Proceedings of the Seventh International Symposium on Advanced Fluid Information

      Pages: 298-299

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] スラッシュ窒素の管内熱・流動特性について2007

    • Author(s)
      大平 勝秀
    • Journal Title

      第27回水素エネルギー協会大会予稿集

      Pages: 61-64

    • Related Report
      2007 Annual Research Report
  • [Journal Article] Numerical Study on Solid Particle Behavior of Slush Nitrogen Two-Phase Flow in a Horizontal Pipe2007

    • Author(s)
      Yasuaki Mukai
    • Journal Title

      Proceedings of The Seventh International Symposium on Advanced Fluid Information

      Pages: 296-297

    • Related Report
      2007 Annual Research Report
  • [Journal Article] Experimental Study of Heat Transfer in Slush Nitrogen Pipe Flow2007

    • Author(s)
      Norifumi Takahashi
    • Journal Title

      Proceedings of The Seventh International Symposium on Advanced Fluid Information

      Pages: 298-299

    • Related Report
      2007 Annual Research Report
  • [Journal Article] Experimental Study of Forced Convection Heat Transfer Characteristics for Slush Nitrogen Pipe Flow2006

    • Author(s)
      T. Kura
    • Journal Title

      Third International Conference on Fluid Dynamics

      Pages: 117-118

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] スラッシュ窒素の管内流動特性および伝熱特性にっいて2006

    • Author(s)
      大平 勝秀
    • Journal Title

      第26回水素エネルギー協会大会予稿集

      Pages: 21-24

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Pressure Drop and Heat Transfer Characteristics for Slush Nitrogen Pipe Flow2006

    • Author(s)
      K. Ohira
    • Journal Title

      Proceedings of the 26th Hydrogen Energy Systems Society of Japan (HESS) Conference (in Japanese)

      Pages: 21-24

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Experimental Study of Forced Convection Heat Transfer Characteristics for Slush Nitrogen Pipe Flow2006

    • Author(s)
      T.Kura
    • Journal Title

      Third International Conference on Fluid Dynamics

      Pages: 117-118

    • Related Report
      2006 Annual Research Report
  • [Journal Article] スラッシュ窒素の管内流動特性および伝熱特性について2006

    • Author(s)
      大平 勝秀
    • Journal Title

      第26回水素エネルギー協会大会予稿集

      Pages: 21-24

    • Related Report
      2006 Annual Research Report
  • [Presentation] スラッシュ窒素の熱・流動特性について-スラッシュ水素実用化に向けて-2008

    • Author(s)
      大平 勝秀
    • Organizer
      第3回電気・水素複合エネルギーシステム研究会
    • Place of Presentation
      仙台市、東北大学
    • Year and Date
      2008-01-11
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Heat Transfer and Flow Characteristics of Slush Nitrogen- For Practical Applications to Slush Hydrogen2008

    • Author(s)
      K. Ohira
    • Organizer
      The 3rd Research Meeting on the Synergetic Energy System for the Electric Machines and Hydrogen
    • Place of Presentation
      Tohoku University, Sendai, Japan
    • Year and Date
      2008-01-11
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] スラッシュ窒素の熱・流動特性について-スラッシュ水素実用化に向けて-2008

    • Author(s)
      大平 勝秀
    • Organizer
      第3回電気・水素複合エネルギーシステム研究会
    • Place of Presentation
      仙台市 東北大学
    • Year and Date
      2008-01-11
    • Related Report
      2007 Annual Research Report
  • [Presentation] 液体水素およびスラッシュ水素技術の開発と環境問題への応用2007

    • Author(s)
      大平 勝秀
    • Organizer
      日本伝熱学会東北支部企画平成19年度秋季伝熱セミナー
    • Place of Presentation
      山形県西置賜郡白鷹町
    • Year and Date
      2007-10-20
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Annual Research Report 2007 Final Research Report Summary
  • [Presentation] Technology Developments of Liquid Hydrogen and Slush Hydrogen, and their Applications to Environmental Problems2007

    • Author(s)
      K. Ohira
    • Organizer
      2007 Heat Transfer Autumn Seminar by the Tohoku Branch of the Heat Transfer Society of Japan
    • Place of Presentation
      Yamagata, Japan
    • Year and Date
      2007-10-20
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Heat Transfer Characteristics of Slush Nitrogen in Turbulent Pipe Flows2007

    • Author(s)
      Katsuhide Ohira
    • Organizer
      2007 Cryogenic Engineering Conference
    • Place of Presentation
      米国テネシー州チャタヌーガ
    • Year and Date
      2007-07-19
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Heat Transfer Characteristics of Slush Nitrogen in Turbulent Pipe Flows2007

    • Author(s)
      K. Ohira
    • Organizer
      2007 Cryogenic Engineering Conference
    • Place of Presentation
      Chattanooga, Tennessee, USA
    • Year and Date
      2007-07-19
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Heat Transfer Characteristics of Slush Nitrogen in Turbulent Pipe Flows2007

    • Author(s)
      Katsuhide Ohira
    • Organizer
      2007Cryogenic Engineering Conference
    • Place of Presentation
      米国テネシー州チャタヌーガ
    • Year and Date
      2007-07-19
    • Related Report
      2007 Annual Research Report

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Published: 2006-04-01   Modified: 2016-04-21  

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