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气膜孔形状对排孔下游换热的影响
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
作者姓名:朱惠人  许都纯  郭涛  刘松龄
作者单位:西北工业大学706教研室,陕西西安710072
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=10000~25000,二次流吹风比M=0.3~2.0,在上述范围选取了26个工况分别对3种孔形进行了实验。 

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:2000-10-06
修稿时间:2000-10-06

Effects of Film Cooling Hole Shape on Heat Transfer
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
Authors:ZHU Hui-ren  XU Du-chun  LIU Song-lin
Affiliation:7th Dept., Northwest Polytechnic University, Xi'an710072, China
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.
Keywords:film cooling  thermo-convection coefficient  dust-pan shaped hole  cone-shaped hole  experimental
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