| 气膜孔形状对排孔下游换热的影响 |
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| 引用本文： | 朱惠人,许都纯,郭涛,刘松龄.气膜孔形状对排孔下游换热的影响[J].航空动力学报,2001,16(4):360-364. |
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| 作者姓名： | 朱惠人 许都纯 郭涛 刘松龄 |
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| 作者单位： | 西北工业大学706教研室,陕西西安,710072 |
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| 摘 要： | 实验研究了气膜孔几何形状、二次流雷诺数及吹风比对孔排下游的局部换热系数的影响。所用孔形是簸箕形孔、圆锥形孔及圆柱形孔 ;实验的参数范围为二次流孔径雷诺数 Re=1 0 0 0 0～ 2 5 0 0 0 ,二次流吹风比 M=0 .3～ 2 .0 ,在上述范围选取了 2 6个工况分别对 3种孔形进行了实验。
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| 关 键 词： | 簸箕形孔 圆锥形孔 换热系数 实验 气膜冷却 |
| 文章编号： | 1000-8055(2001)04-0360-05 |
| 收稿时间： | 2000/10/6 0:00:00 |
| 修稿时间： | 2000年10月6日 |
Effects of Film Cooling Hole Shape on Heat Transfer |
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| ZHU Hui-ren,XU Du-chun and LIU Song-lin.Effects of Film Cooling Hole Shape on Heat Transfer[J].Journal of Aerospace Power,2001,16(4):360-364. |
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| Authors: | ZHU Hui-ren XU Du-chun and LIU Song-lin |
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| Institution: | 7th Dept., Northwest Polytechnic University, Xi'an710072, China;7th Dept., Northwest Polytechnic University, Xi'an710072, China;7th Dept., Northwest Polytechnic University, Xi'an710072, China;7th Dept., Northwest Polytechnic University, Xi'an710072, China |
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| Abstract: | The Effects of hole shapes,secondary flow Reynolds numbers,and blowing ratio on the heat transfer downstream of film cooling holes have been investigated.Experiments on dust-pan shaped holes,cone-shaped holes and round holes have been conducted with secondary flow Reynolds number ranging from 10,000 to 25,000 and blowing rate ranging from 0 3 to 2 0.Measurements are taken for 26 conditions.Results show that the critical blowing ratio is 1 3 for the dust-pan shaped holes and cone-shaped holes,0 7 for the round holes.The turbulence provided by jet from round holes is greater than that from dust-pan shaped holes and cone-shaped holes. |
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| Keywords: | film cooling thermo-convection coefficient dust-pan shaped hole cone-shaped hole experimental |
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