年間 8 号発行
ISSN 印刷: 1065-5131
ISSN オンライン: 1563-5074
Indexed in
Endwall Heat Transfer Characteristics with a Single Oblique Pin Fin
要約
Effect of a single oblique pin fin on the endwall heat transfer is dealt with in the present paper. Pin fin was inclined to the streamwise direction from θ = −60 degrees (upstreamwise) to +60 degrees (downstreamwise) in every 15 degrees, where θ is an angle between the axis of the pin fin and the normal of the endwall. Thermosensitive liquid crystal was used to measure the local heat transfer coefficient on the endwall. When the pin fin was inclined upstreamwise at θ = −45 degrees, the heat transfer coefficient on the endwall and the area of enhanced heat transfer became maximum. From the flow visualization by the smoke wire method, the horseshoe vortices were observed around the pin fin when the pin fin was inclined upstreamwise. Especially, for the case of θ = −45 degrees, it was found that the heat transfer was enhanced by the impingement of the wake flow on the immediate downstream endwall of the pin fin. However, for the case of the pin fin inclined downstreamwise, there was no effect on the enhancement of heat transfer on the endwall.
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