학술논문

Computational Investigations of Impingement Heat Transfer on an Effused Concave Surface
Document Type
Academic Journal
Source
International Journal of Fluid Machinery and Systems. 2012-06 5(2):72-90
Subject
CFD
Film holes
Gas turbine blade cooling
Impingement cooling
Language
Korean
Abstract
A computational study is reported on flow and heat transfer characteristics from five rows of circular air jets impinging on a concave surface with four rows of effusion holes. The effects of exit configurations of spent air and the arrangement of jet orifices and effusion holes for a jet Reynolds number of 7500 is investigated. In all, eight cases are studied and a good qualitative correlation is found among their flow patterns, pressure variations and heat transfer distributions.

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