Influence of orientation angles of branch hole on film cooling effectiveness with one inlet and double outlet hole injection

LI Guang-chao; WU Dong; ZHANG Wei; BAI Shu-sheng

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Influence of orientation angles of branch hole on film cooling effectiveness with one inlet and double outlet hole injection

更新时间：2026-07-07

- Influence of orientation angles of branch hole on film cooling effectiveness with one inlet and double outlet hole injection
- Vol. 26, Issue 7, (2011)
- 作者机构：
  
  沈阳航空航天大学动力与能源工程学院辽宁省数字化工艺仿真与试验技术重点实验室,沈阳,110136
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2011
- 稿件说明：
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LI Guang-chao, WU Dong, ZHANG Wei, et al. Influence of orientation angles of branch hole on film cooling effectiveness with one inlet and double outlet hole injection[J]. 2011, 26(7).
DOI：

LI Guang-chao, WU Dong, ZHANG Wei, et al. Influence of orientation angles of branch hole on film cooling effectiveness with one inlet and double outlet hole injection[J]. 2011, 26(7). DOI：

摘要

为了探讨次孔方位角对单入口-双出口孔射流气膜冷却效率的影响

利用商业软件提供的有限体积法求解Navier-Stokes方程

对次孔方位角分别为30°

45°

60°和90°的单入口-双出口孔射流冷却效率进行数值模拟.吹风比变化范围为0.5~2.0.研究了流场、气膜冷却效率和径向平均气膜冷却效率的变化规律.结果表明

相对于圆柱孔

单入口-双出口孔射流气膜冷却效率明显改进.基于气膜冷却效率的最佳次孔方位角度为45°

高于圆柱孔射流气膜冷却效率300%.吹风比越大

次孔方位角对气膜冷却效率的影响越明显.

Abstract

In order to investigate the influence of orientation angles of branch hole on film cooling effectiveness with one inlet and double outlet hole injection

the film cooling effectiveness was simulated by commercial code using the finite volume method

on the condition that the orientation angles of branch hole were 30°

45°

60° and 90° respectively

the blowing ratios varied from 0.5 to 2.0 . The flow field

the film cooling effectiveness and the spanwise averaged film cooling effectiveness were investigated. The results show that the film cooling effectiveness with one inlet and double outlet hole injection has been improved as compared to that of the cylindrical hole injection. The optimized branch hole angle is 45°

higher by 300% than the film cooling effectiveness of the cylindrical hole injection. The orientation angles of branch hole have an increasing influence on the film cooling effectiveness with the increase of blowing ratios.

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