Heat Transfer Characteristic of a Triangular Channel with Turbulence Promoter

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概要

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• An experimental and analytical study on the heat transfer and pressure loss of a triangular cooling flow channel with and without turbulent ribs has been conducted for high reliability cooling design of gas turbine blades. In addition, the means of enhancing and controlling the local heat transfer on the surface of a triangular ribbed channel, utilizing the secondary flow from the gap between side-wall and rib, are proposed. The contours of experimental and analytical Nusselt number on the ribbed channel with the gap show the enhancement of heat transfer by re-attachment flow, swirl flow, and secondary flow from the gap. Optimizing the length of the gap enables the enhancement of the heat transfer around the trailing edge and to assure mean heat transfer in the whole of the cooling flow passage.

• 公益社団法人日本ガスタービン学会の論文
• 2005-09-20

著者

• Kitamura Tsuyoshi

  Takasago R & D Center Mitsubishi Heavy Industries Ltd.

• Matsuura Masaaki

  Takasago Research And Development Center Mitsubishi Heavy Industries Ltd

• Takeishi Ken-ichiro

  Department Of Mechanical Engineering Graduate School Of Engineering Osaka University

• Shimizu Kunihiro

  Nagoya Guidance And Propulsion System Works Mitsubishi Heavy Industries Ltd.

• Matsuura Masaaki

  Takasago R & D Center Mitsubishi Heavy Industries Ltd.

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• Heat Transfer Characteristic of a Triangular Channel with Turbulence Promoter

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