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Numerical investigation of film cooling effectiveness on the curved surface

机译:曲面膜冷却效果的数值研究

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This paper deals with a numerical investigation of the film cooling effectiveness on five different curved surfaces and a flat surface. The models consist of 11 rectangular cross-sectioned injection holes aligned in a single row. The blowing ratios are from 0.5 to 2.0, and the injection angle with respect to the horizontal plane is 30°. The hole geometry, the slope of the curved surface and the blowing ratio have important effects on the film cooling effectiveness. The results show that the film cooling effectiveness of a given curved surface, both along the mainstream and the spanwise direction, depends on the optimum selection of the parameters mentioned above.
机译:本文对五个不同曲面和一个平面上的薄膜冷却效率进行了数值研究。该模型由单排排列的11个矩形横截面的注射孔组成。吹风比为0.5至2.0,并且相对于水平面的喷射角为30°。孔的几何形状,曲面的斜率和吹塑比对薄膜的冷却效果有重要影响。结果表明,既定的弯曲表面在主流方向和展向方向上的薄膜冷却效率都取决于上述参数的最佳选择。

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