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Experimental study on heat and momentum transfer for turbulent flow in rectangular channels with a sharp turn

Research Project

Project/Area Number 10450083
Research Category

Grant-in-Aid for Scientific Research (B)

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

Principal Investigator

FUJITA Hideomi  Nagoya Univ., Mechanical Eng., Professor, 工学研究科, 教授 (10023136)

Co-Investigator(Kenkyū-buntansha) NAKAYAMA Hiroshi  Nagoya Univ., Mechanical Eng., Research Assoc., 工学研究科, 助手 (40303656)
HIROTA Masafumi  Nagoya Univ., Mechanical Eng., Assoc. Professor, 工学研究科, 助教授 (30208889)
Project Period (FY) 1998 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥13,600,000 (Direct Cost: ¥13,600,000)
Fiscal Year 1999: ¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1998: ¥11,900,000 (Direct Cost: ¥11,900,000)
KeywordsSerpentine channel / Sharp turn / Flow separation and reattachment / Complex turbulent flow / Heat / mass transfer / PIV / LDV / Naphthalene sublimation method / 往復流路 / 二次流れ / 強制対流熱伝達 / 局所熱(物質)伝達率 / PIV計測 / 熱流動計測
Research Abstract

Rectangular cross-sectioned serpentine channels with a sharp 180-degree turn are often used in thermal equipment such as compact heat exchangers and internal cooling passages in gas turbine blade. In such channels with a 180-degree turn, the secondary flow is induced by the centrifugal force in flowing around the turn section, and the separation and reattachment of the flow also occur in and after the turn section. Thus, the turbulent flow characteristics in the channel become very complex with a three-dimensional structure, and the local heat transfer rates are expected to change steeply over small distances on the heat transfer surface.
In this study, detailed characteristics of heat transfer for turbulent flow in the rectangular cross-sectioned serpentine channels with a sharp turn have been examined experimentally using the naphthalene sublimation technique. Among many possible experimental parameters, main attention has been directed to the influence of the following for parameters on the heat (mass) transfer characteristics in the channel ; (i) Turn clearance, (ii) Reynolds number, (iii) Flow-inlet condition at the channel entrance, (iv) Inclination angle of the partition wall. The local heat (mass) transfer characteristics on all the walls of the channels and distributions of the local wall pressure have been measured under the condition of turbulent flow.
Next, the flow characteristics in the channels have been measured by LDV and PIV, directing a special attention to the influences of the turn clearance, which is the most important geometrical parameter in this type of channel, on the flow structure in and after the turn section. Then, by comparing the distributions of the local heat (mass) transfer rates on the spanwise centerline on the channel walls with those of the mean velocities and turbulence intensities near the walls, the mechanism of heat (mass) transfer from the channel walls have been examined.

Report

(3 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • Research Products

    (31 results)

All Other

All Publications (31 results)

  • [Publications] 廣田真史: "シャープターンをもつ長方形流路内の熱(物質)伝達特性"日本機械学会論文集(B編). Vol.64-625. 2977-2985 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] A. Syuhada: "Heat/Mass Transfer in Serpentine Flow Passage with Rectangular Cross-Section"Extended Abstracts of 2nd International Symposium on Advanced Energy Conversion Systems and Related Technologies. 304-305 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M. Hirota: "Developing Heat/Mass Transfer in Low-Aspect-Ratio Rectangular Channels with Ribbed Walls"Proceedings of 11th International Heat Transfer Conference. Vol.5. 363-368 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M. Hirota: "Heat/Mass Transfer Characteristics in Two-Pass Smooth Channels with a Sharp 180-Deg Turn"International Journal of Heat and Mass Transfer. Vol. 42. 3757-3770 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 廣田真史: "シャープターンをもつ長方形流路内の局所熱(物質)伝達特性(流路入口形状の影響)"日本機械学会論文集(B編). Vol.65-635. 2439-2446 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M. Hirota: "Heat/Mass Transfer for Sharp 180-Deg Turning Flow in Rectangular Channels with Inclined Partition Wall"Proceedings of the 5th ASME/JSME Joint Thermal Engineering Conference. AJTE99-6453. 1-8 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M. Hirota: "Heat/Mass Transfer in Serpentine Flow Passage with a Sharp Turn (Influence of Entrance Configuration)"Compact Heat Exchangers and Enhancement Technology for the Process Industries. 159-166 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 廣田真史: "粗面をもつ矩形流路内助走区間における局所熱(物質)伝達"流体熱工学研究. Vol.34-2. 29-36 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] H. Nakayama: "Velocity and Heat/Mass Transfer Measurements in Rectangular Cross-Sectioned Channels with a 180-Deg Sharp Turn"Proceedings of the Third International Symposium on Turbulence, Heat and Mass Transfer. (掲載予定). (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] A. Syuhada: "Heat/Mass Transfer in Serpentine Flow Passge with Rectangular Cross-Section"Journal of Energy Conversion and Management. (掲載予定). (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Masafumi Hirota: "Heat (Mass) Transfer Characteristics in Rectangular Ducts with a Sharp 180-Degree Turn"Trans. Japan Society of Mechanical Engineers, Series B. 64-625(in japanese). 2977-2985 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Ahmad Syuhada: "Heat/Mass Transfer in Serpentine Flow Passage with Rectangular Cross-Section"Extended Abstracts of 2nd Int. Symp. on Advanced Energy Conversion Systems and Related Technologies. 304-305 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Masafumi Hirota: "Developing Heat/Mass Transfer in Low-Aspect-Ratio Rectanglur Channels with Ribbed Wall"Prpceedings of 11th International Heat Transfer Conference. Vol. 5. 363-368 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Masafumi Hirota: "Heat/Mass Transfer Characteristics in Two-Pass Smooth Channels with a Sharp 180-Deg Turn"International Journal of Heat and Mass Transfer. Vol. 42. 3757-3770 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Masafumi Hirota: "Local Heat (Mass) Transfer Characteristics in Rectanglar Ducts with a Sharp 180-Deg Turn (Influence of Flow-Inlet Configuration)"Trans. Japan Society of Mechanical Engineers, Series B. Vol. 65-635. 2439-2446 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Masafumi Hirota: "Heat/Mass Transfer for Sharp 180-Deg Turning Flow in Rectanglar Channels with Inclined Partion Wall."Proceedings of 5th ASME/JSME Joint Thermal Engineering Conference. AJTE99-6453. 1-8 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Masafumi Hirota: "Heat/Mass Transfer in Serpentine Flow Passage with a Sharp Turn (Influence of Entrance Configulation)"Compact Heat Exchangers and Enhancement Technology for the Process Industries. 156-166 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Masafumi Hirota: "Influence of Flow-Inlet Condition on Developing Heat/Mass Transferee in Rectanglar Duct with rib-Roughened Wall"Flow and Heat Transfer Research. Vol. 34. 29-36 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Hiroshi Nakayama: "Velocity and Heat/Mass transfer Measurements in Rectangular Cross-Sectioned Channels with a 180-deg Sharp Turn"Proc. of 3rd Int. Symp. Turbulence, Heat and Mass Transfer. (in print). (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Ahmad Syuhada: "Heat (Mass) Transfer in Serpentine Flow Passage with Rectangular Cross-Section"Journal of Energy Conversion and Management. (in print). (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 廣田真史: "シャープターンをもつ長方形流路内の熱(物質)伝達特性"日本機械学会論文集,B編. 64・625. 2977-2985 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Hirota: "Heat/Mass Transfer Characteristics in Two-Pass Smooth Channels with a Sharp 180-Deg Turn"Int. Journal of Heat and Mass Transfer. 42・20. 3757-3790 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Hirota: "Heat/Mass Transfer for Sharp 180-Deg Turning Flow in Rectangular Channels with Inclined Partition Wall"5th ASME-JSME Joint Thermal Eng. Conference, San Diego AJFE. 99-6453. 1-8 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 廣田真史: "シャープターンをもつ長方形流路内の局所熱(物質)伝達特性(流路入口形状の影響)"日本機械学会論文集,B編. 65・635. 2439-2446 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Hirota: "Heat/Mass Transfer in Serpentine Flow Passage with a Sharp Turn (Influence of Entrance Configuration)"Compact Heat Exchangers and Enhancement Technology for th Process Industries. 1. 159-166 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Hirota: "Heat/Mass Transfer in Serpentine Flow Passage with Rectangular Cross-Section"Journal of Energy Conversion and Management. (掲載予定). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] 廣田真史,藤田秀臣,ほか4名: "シャープターンをもつ長方形流路内の熱(物質)伝達特性" 日本機械学会論文集,B編. 64・625. 2977-2985 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] M.Hirota,H.Fujita,et al.: "Heat/Mass Transfer in Serpentine Flow Passage with Rectangulaor Cross-Section" Extended Abstracts RAN98,2nd Int.Sympo. on Adranced Energy Conversion Systems and Related Technologies. 304-305 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] M.Hirota,H.Fujita,et al.: "Heat/Mass Transfer characteristics in Two-Pass Smooth Channels with a Sharp 180-Deg Turn" Int.J.of Heat and Mass Transfer. (掲載可). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] M.Hirota,H.Fujita,et al.: "Heat/Mass Transfer for Sharp 180-Deg Turning Flow in Rectanyalor Channels with Inclined Partition Wall" 5th ASME-JSME Joint Thermal Eng.Conference. (受理). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 廣田真史,藤田秀臣,ほか3名: "シャープターンをもつ長方形流路内の熱(物質)伝達(内壁設置角度とターン間隙の影響)" 第36回日本伝熱シンポジウム講演論文集. (発表決定). (1999)

    • Related Report
      1998 Annual Research Report

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Published: 1998-04-01   Modified: 2016-04-21  

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