A213 A Study on the Effect of Angled Pin Fins on Endwall Heat Transfer(Gas Turbine-7)
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概要
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Endwall heat transfer characteristics of inclined pin-fin array channels have been investigated to improve the cooling efficiency of gas turbine's combustor liners. The time-mean local Nusselt number profiles were obtained by naphthalene sublimation technique based on the heat/mass transfer analogy. Three kinds of angled pin-fins (-45, 0 and +45 degrees) were tested and compared with each other. As a result, the average heat transfer coefficient on the endwall of normal pin fins was higher than that of the angled pin fins. However, the total amount of heat transfer is expected to be increased by inclined pin fins because the total surface area is about 1.4 times larger than that of normal pin fins, and the pressure loss in angled pin-fin channel was smaller than in the normal pin-fin channel.
- 一般社団法人日本機械学会の論文
- 2009-11-16
著者
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Oda Yutaka
Dept. Of Mech. Eng. Osaka University
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Miyake Yoshiaki
Mitsubishi Heavy Industries Ltd.
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TAKEISHI Kenichiro
Dept. of Mech. Eng., Osaka University
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Motoda Yusuke
Dept. of Mech. Eng., Osaka University
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Takeishi Kenichiro
Dept. Of Mech. Eng. Osaka University
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Motoda Yusuke
Dept. Of Mech. Eng. Osaka University
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