Conjugate Heat Transfer Analysis of Film Cooling Flows

• 来源期刊: 热科学学报（英文版）
• 学科: 工学
• 年，卷（期）: 2006,（1）
• 页码范围: 85-91
• 页数: 7页
• 分类号: TK124
• 语种: 英文

摘要

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-ε 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.