Numerical simulation on cooling effectiveness of gas film on tip of blade with groove and fins

LI Guangchao; ZHANG Zhandong; ZHANG Wei; KOU Zhihai; ZHAO Guochang

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Numerical simulation on cooling effectiveness of gas film on tip of blade with groove and fins

Thermal Power Generation Issue 9, (2016)

更新时间：2025-09-28

- Numerical simulation on cooling effectiveness of gas film on tip of blade with groove and fins
- 作者机构：
  
  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,辽宁,沈阳,110136
- 作者简介：
- 基金信息：
- DOI：
  CLC： V231.1
- Published Online：25 September 2016，
  
  Published：2016
- 稿件说明：
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LI Guangchao, ZHANG Zhandong, ZHANG Wei, et al. Numerical simulation on cooling effectiveness of gas film on tip of blade with groove and fins[J]. Thermal Power Generation, 2016, (9).
DOI：

LI Guangchao, ZHANG Zhandong, ZHANG Wei, et al. Numerical simulation on cooling effectiveness of gas film on tip of blade with groove and fins[J]. Thermal Power Generation, 2016, (9). DOI：

摘要

为了提高凹槽叶顶的气膜冷却效率

提出了一种凹槽带肋叶顶结构。通过数值模拟方法，研究了叶顶结构在不同吹风比、滑移壁面条件下冷却气体在凹槽腔内的流动状态和气膜冷却效率分布，揭示了凹槽带肋叶顶改善叶顶气膜冷却效率机理。结果表明:吹风比为0.5时

气膜孔附近冷却效率最高；吹风比为1.5时

凹槽内吸力面附近冷却效率最高；肋片导流作用使冷气更大范围地覆盖在凹槽内

提高了平均冷却效率

这种效应在吹风比为0.5时更明显。

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