Experimental study on film cooling characteristics of lamilloy at different blowing ratios

LI Guangchao; CAO Xifeng; LIU Yongquan; DU Zhineng; ZHANG Wei

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Experimental study on film cooling characteristics of lamilloy at different blowing ratios

Thermal Power Generation Vol. 44, Issue 9, Pages: 43-47(2015)

更新时间：2025-09-28

- Experimental study on film cooling characteristics of lamilloy at different blowing ratios
- 作者机构：
  
  1. 沈阳航空航天大学辽宁省航空推进系统先进测试技术重点实验室
  2. 中国航空工业集团公司沈阳发动机设计研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK471
- Published：2015
- 稿件说明：
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LI Guangchao, CAO Xifeng, LIU Yongquan, et al. Experimental study on film cooling characteristics of lamilloy at different blowing ratios[J]. Thermal Power Generation, 2015, 44(9): 43-47.
DOI：

LI Guangchao, CAO Xifeng, LIU Yongquan, et al. Experimental study on film cooling characteristics of lamilloy at different blowing ratios[J]. Thermal Power Generation, 2015, 44(9): 43-47. DOI：

摘要

应用窄带瞬态液晶测量技术对轴向1个单元层板模型的外表面冷却效率和换热系数

在气膜孔射流角度分别为30°和90°

吹风比分别为1.0

1.5和2.0下的变化规律进行了试验研究。结果表明:层板模型双排孔下游区域冷却效率均随着吹风比的增大而减小;不同射流角度气膜孔的冷却效率分布形态不同;30°和90°气膜孔层板表面换热系数随吹风比的变化均不明显。

Abstract

The narrow-band transient liquid crystal technique was applied to carry out experimental investigation on cooling efficiency and heat transfer coefficient of the outer surface of a narrow chamber lamilloy with double-row film cooling holes

under conditions with blowing ratio of 1.0

1.5and 2.0

and film hole injection angle of 30°and 90°.The results show that

for the lamilloy model

the film cooling efficiency in downstream area of the double-row hole decreased with the increasing blowing ratio.The distribution of cooling efficiency is different for film holes with different injection angles.For lamilloys with injection angle of 30°and 90°

the surface heat transfer coefficient of the film hole changed little with the blowing ratio.

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