Conjugate heat transfer analysis of film cooling flows

Autor: Hideaki Sugishita, Hideyuki Uechi, Xiaochen Lu, Pei-Xue Jiang, Kiyoshi Suenaga
Rok vydání: 2006
Předmět:
Zdroj: Journal of Thermal Science. 15:85-91
ISSN: 1993-033X
1003-2169
Popis: The objective of this study is to evaluate the potential of various grids to satisfactorily simulate the development of a cooling film, using a coupled computation that takes into account the full geometry. Detailed computations of a single row of 30 degrees round holes on a flat plate are presented for blowing ratios of 0.764, 1.01 and 1.54. The simulation results are compared well with experimental data. The two-layer model gave more accurate results but consumed much more computational time than the standard wall functions. The k-e turbulence model with wall functions with appropriate values of y + is suitable for practical use. The results show the importance of the conjugate calculation for accurately describing the influence of the heat transfer within the cooling film.
Databáze: OpenAIRE
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