• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2000 Fiscal Year Final Research Report Summary

Basic Research on Heat Transfer Augmentation in Rotating Boundary Layers

Research Project

Project/Area Number 11650189
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Fluid engineering
Research InstitutionKeio University

Principal Investigator

MASUDA Shigeaki  Keio University, Faculty of Science and Technology, Professor, 理工学部, 教授 (90051664)

Co-Investigator(Kenkyū-buntansha) OBI Shinnosuke  Keio University, Faculty of Science and Technology, Associate Professor, 理工学部, 助教授 (80233609)
Project Period (FY) 1999 – 2000
Keywordsheat transfer / boundary layer / system rotation / Coriolis force / centrifugal buoyancy / Goertler instability / heat transfer augmentation technology
Research Abstract

In order to obtain fundamental knowledge for heat transfer augmentation in rotating machinery, the influence of system rotation on the heat transfer characteristics of transitional and turbulent zero-pressure gradient boundary layers have been experimentally investigated. A test plate is installed in a wind tunnel, which is rotatable around the axis parallel to the plate leading edge with constant speed of rotation. Local heat transfer coefficient during rotation is determined by employing a temperature sensitive liquid crystal. The thermo-couples were employed for compensation of conductive heat loss to the solid wall. Effects of the Coriolis force and the centrifugal buoyancy force have been examined by comparing the heat transfer coefficient with different freestream velocity, rotational speed and wall temperature.
When the Coriolis force acts toward the wall, heat transfer in a laminar boundary layer is dramatically enhanced. This can be explained by generation of streamwise vortices by Coriolis torque and resulting enhancement of transverse convection of energy. The turbulent heat transfer is slightly enhanced by wall-ward Coriolis force, which may be attributed to the elevated turbulent diffusion through the modifications of turbulent eddies by system rotation.
For the opposite direction of rotation, Coriolis force stabilization exhibits no systematic effect on a laminar heat transfer, while it causes the slight decrease in heat transfer coefficient in a turbulent boundary layer. The latter is attributed to the attenuation of turbulent diffusion by Coriolis stabilization.
The centrifugal buoyancy enhances the turbulent heat transfer both in pressure and suction side boundary layers. It has been suggested that this effect may be due to the modified convection through the buoyancy term in the Reynolds stress equation.

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] 江戸義博 他: "境界層熱伝達に及ぼすコリオリ力の影響"第36回日本伝熱シンポジウム講演論文集. 3. 551-552 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 小宮山宏 他: "回転境界層内のゲルトラー渦と熱伝達特性"日本機械学会論文集B編. 66・643. 768-773 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.Edo et al.: "Heat transfer characteristics in rotating boundary layer"International Journal of Heat and Fluid Flows. 21. 684-692 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 山脇大輔 他: "境界層熱伝達に及ぼすコリオリ力の影響"第32回流体力学講演会講演論文集. 179-182 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S.Masuda: "Heat Transfer in Transitional and Turbulent Rotating Boundary Layers"4th Japan-China Workshop on Turbulent Flows. 16-17 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] D.Yamawaki: "Heat transfer in transitional and turbulent boundary layers with system rotation"Proceedings of Turbulent Heat Transfer III. (CD-ROM). (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.Edo, et al.: Influence of Coriolis Force on Heat Transfer in Boundary Layers, Proc.36^<th> Japanese Heat Transfer Symposium. Vol.3. 551-552 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Komiyama et al.: Goertler Vortices and Its Effects on Heat Transfer in Rotating Boundary Layer, Trans.JSME (B). Vol.66, No.643. 768-773 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y.Edo et al.: Heat Transfer Experiments in Rotating Boundary Layer Flow, International Journal of Heat and Fluid Flows. Vol.21. 684-692 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] D.Yamawaki et al.: Influence of Coriolis Force on Heat Transfer in Boundary Layers, Proc.32^<th> Fluid Dynamics Symposium. 179-182 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S.Masuda: Heat Transfer in Transitional and Turbulent Rotating Boundary Layers, 4th Japan-China Workshop on Turbulent Flows, Nagoya (2000). 16-17

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] D.Yamawaki et al.: Proceedings of Turbulent Heat Transfer III, Anchourage, USA (2001). (CD-ROM).

    • Description
      「研究成果報告書概要(欧文)」より

URL: 

Published: 2002-03-26  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi