Numerical study on cooling performance of Nekomimi film holes

YU Feilong; XIAO Junfeng; GAO Song; LI Yuanyuan; DUAN Jingyao; CAI Liuxi; SHANGGUAN Bo

doi:10.19666/j.rlfd.201711170

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Numerical study on cooling performance of Nekomimi film holes

Thermal Power Generation Vol. 47, Issue 9, Pages: 48-55(2018)

更新时间：2025-09-28

- Numerical study on cooling performance of Nekomimi film holes
- 作者机构：
  
  西安热工研究院有限公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.201711170
  CLC： TK479
- Published Online：03 September 2018，
  
  Published：2018
- 稿件说明：
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YU Feilong, XIAO Junfeng, GAO Song, et al. Numerical study on cooling performance of Nekomimi film holes[J]. Thermal Power Generation, 2018, 47(9): 48-55.
DOI：

YU Feilong, XIAO Junfeng, GAO Song, et al. Numerical study on cooling performance of Nekomimi film holes[J]. Thermal Power Generation, 2018, 47(9): 48-55. DOI： 10.19666/j.rlfd.201711170.

摘要

为了研究透平静叶不同位置处猫耳气膜孔的冷却性能

对7种猫耳气膜孔结构在吹风比为0.5、1.0、1.5和2.0时的冷却效率曲线进行分析。结果表明:前向角大小是影响猫耳气膜孔冷却性能的关键参数;随着吹风比的增大

静叶压力面靠近前缘的气膜孔纵向平均冷却效率有降低趋势;提高前向角起始位置会使下游中心线附近冷却效率增大

但纵向平均气膜冷却效率较低。

Abstract

To investigate the cooling performance of Nekomimi film hole at different positions of turbine stator vane

film cooling efficiency curves of seven kinds of Nekomimi film hole structures at the blowing ratios of 0.5

1.0

1.5 and 2.0 are analyzed. The results show that the forward angle is the key parameter affecting the cooling performance of Nekomimi film hole. With the increasing of the blowing ratio

the longitudinal average cooling efficiency of the film hole near the leading edge of the stator vane pressure surface has a decreasing tendency. Besides

raising the starting position of the forward angle can increase the cooling efficiency near the downstream centerline but decrease the longitudinal average film cooling efficiency.

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