Computer-aided simulations of convective heat transfer in a wedged channel with pin-fins at various outlet arrangements and nonuniform diameters

Qitao Zhou, Xinmei Wang, Lei Li, Gongnan Xie, Fujuan Tong

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

The turbine blade works at high thermal loads, especially the trailing edge of the blade due to the hot gas leakage flow. Pin-fins are well recognized as a kind of effective device to augment the convective heat transfer and effectively cool the trailing edge. In this paper, the cooling effectiveness of chordwise outlet pin-fins distance and inner pin fin diameter is, respectively, studied on the heat transfer and flow friction of the trailing edge of the blade with software CFX. A 90 deg turn cooling wedge passage with cylindrical pin-fins is used to model the trailing edge. Results show that the pin-fins distance at the outlet and the arithmetic arrangement of the inner pin-fins diameter both are vital factors to influence the cooling effectiveness in the trailing edge of the blade.

Original languageEnglish
Article number127078
JournalAdvances in Mechanical Engineering
Volume2013
DOIs
StatePublished - 2013

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