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Local Heat Transfer Measurement in an Internal Cooling Passage of a Gas Turbine Blade and its Direct Numerical Simulation

Research Project

Project/Area Number 07455091
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Thermal engineering
Research InstitutionTokyo University of Agriculture and Technology

Principal Investigator

MOCHIZUKI Sadanari  Tokyo Univ.of Agriculture and Technology, Faculty of Engineering, Professor, 工学部, 教授 (10013715)

Co-Investigator(Kenkyū-buntansha) MURATA Akira  Tokyo Univ.of Agriculture and Technology, BASE,Associate Professor, 大学院・生物システム応用科学研究科, 助教授 (60239522)
Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥6,400,000 (Direct Cost: ¥6,400,000)
Fiscal Year 1996: ¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1995: ¥4,300,000 (Direct Cost: ¥4,300,000)
KeywordsTurbulent Heat Transfer / Heat Transfer Augmentation / Turbulence Promoter / Rotating System / Coriolis Force / Large Eddy Simulation / Finite Difference Method / 直接数値解析
Research Abstract

In order to clarify the structure of turbulent flow governing the heat transfer in a rotating system, the experiments of smooth and rib-roughened ducts and the numerical analysis were performed. In the experiments, two different experimental setups were used. One is for straight-duct experiment and the other is for serpentine-duct experiment. The square-straight-duct results measured by using 204 thermocouples showed the variation of heat transfer coefficient in both streamwise and peripheral directions. The case of 90 degrees rib arrangement showed the locally maximum heat transfer between the two consecutive ribs. When the ribs were inclined to 60 degrees, the secondary flow induced by this inclination caused the augmentation in heat transfer. In the rectangular serpentine duct case, the rib inclination effect was examined changing the inclination angle from 45 to 90 degrees by using 458 thermocouples. The maximum heat transfer was obtained around the angle of 45-60 degrees.
In the numerical analysis, the rotating square smooth duct case was simulated by using the finite difference method. The Reynolds number defined by using the half side length and the friction velocity was 350 and the rotation number was varied from 0 to 1.0. Because of the computational resource limitation, the Smagorinsky model was introduced. The numerical results showed the effect of the Coriolis force on the peripheral variation of heat transfer and the laminarization near the suction side. When the extension to the more complicated duct configuration is considered, the introduction of the parallel computing technique and the universal sub-grid scale model will be essential as a next step.

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (9 results)

All Other

All Publications (9 results)

  • [Publications] S.Mochizuki,M.Beier,A.Murata,et al.: "Detailed Measurement of Convective Heat Transfer in Rotating Two-Pass Rib-Roughened Coolant Channels" ASME Turbo Asia '96,Jakarta,Indonesia. 96-TA. (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 村田章,望月貞成: "管軸に垂直な軸まわりに回転する正方形管内乱流熱伝達のLES" 第34回日本伝熱シンポジウム講演論文集. III. 597-598 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] R.Kiml,望月貞成,村田章: "Influence of Gaps between Side Walls and Ribs on the Heat Transfer in the Straight Rib-Roughened Duct" 第34回日本伝熱シンポジウム講演論文集. I. 27-28 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] S.Mochizuki, , M.Beier, A.Murata, et al.: "Detailed Measurement of Convective Heat Transfer in Rotating Two-Pass Rib-Roughened Coolant Channels" ASME Turbo Asia '96, Jakarta, Indonesia November. 96-TA. (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] A.Murata, S.Mochizuki: "Large Eddy Simulation of Turbulent Heat Transfer in a Rotating Square Duct" Proc.of 34th National Heat Transf.Symp.of Japan, May. vol.III. 597-598 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] R.Kiml, S.Mochizuki, A.Murata: "Influence of Gaps between Side Walls and Ribs on the Heat Transfer in the Straight Rib-Roughened Duct" Proc.of 34th National Heat Transf.Symp .of Japan, May. vol.I. 27-28 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] S.Mochizuki,,M.Beier,A.Murata,et al.: "Detailed Measurement of Convective Heat Transfer in Rotating Two-Pass Rib-Roughened Coolant Channels" ASME Turbo Asia '96,Jakarta,Indonesia. 96-TA. (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 村田章,望月貞成: "管軸に垂直な軸まわりに回転する正方形管内乱流熱伝達のLES" 第34回日本伝熱シンポジウム講演論文集. (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] R.Kiml,望月貞成,村田章,高橋達治: "An Influence of Gaps between Side Walls and Ribs on the" 第34回日本伝熱シンポジウム講演論文集. (1997)

    • Related Report
      1996 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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