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Interior local heat transfer characteristics of midchord region due to sparse film cooling holes
Author(s): 
Pages: 831-836
Year: Issue:  5
Journal: JOURNAL OF AEROSPACE POWER

Keyword:  航空、航天推进系统涡轮叶片冲击冷却气膜冷却局部换热特性;
Abstract: 涡轮叶片弦中区的冷却为冲击带初始横流和气膜孔溢流的复杂流动换热,通过实验的方法,研究了涡轮叶片弦中区沿流向局部换热特性和靶板平均换热特性随冲击雷诺数、横流射流密流比、气膜出流与横流密流比以及冲击腔高度与冲击孔直径之比的变化规律,并通过气膜出流与横流密流比对局部换热效果、区域平均换热效果以及靶板整体平均换热效果的影响规律揭示气膜的介人对冷气侧换热带来的影响.
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