Influence of Crater Shape and Depth on Film Cooling Effectiveness

ZHANG Deheng; HE Yeguang; ZHAO Shengyan; YANG Tianhua; DU Tao

doi:10.19805/j.cnki.jcspe.2025.240154

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Influence of Crater Shape and Depth on Film Cooling Effectiveness

更新时间：2026-10-10

- Influence of Crater Shape and Depth on Film Cooling Effectiveness
- Chinese Journal of Power Engineering Vol. 45, Issue 7, Pages: 961-967(2025)
- 作者机构：
  
  1. 沈阳航空航天大学能源与环境学院,辽宁,沈阳,110136
  2. 东北大学冶金学院,辽宁,沈阳,110819
- 作者简介：
- 基金信息：
- DOI：10.19805/j.cnki.jcspe.2025.240154
  CLC：
- Online First：14 July 2025，
  
  Published：2025
- 稿件说明：
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张德恒,贺业光,赵胜岩,杨天华,杜涛. 凹坑造型与深度对气膜冷却效果影响的研究动力工程学报, 2025, 45(7): 961-967 https://doi.

org/10.19805/j.cnki.jcspe.2025.240154
张德恒,贺业光,赵胜岩,杨天华,杜涛. 凹坑造型与深度对气膜冷却效果影响的研究动力工程学报, 2025, 45(7): 961-967 https://doi. DOI： 10.19805/j.cnki.jcspe.2025.240154.

org/10.19805/j.cnki.jcspe.2025.240154 DOI：

摘要

为了提高涡轮叶片的气膜冷却效率

在圆孔基础上设计了三角形凹坑孔和V形凹坑孔

并讨论了不同凹坑深度的影响。采用压力敏感漆技术测量了不同吹风比

下的绝热气膜冷却效率。结果表明:在所有吹风比下凹坑孔的气膜冷却性能均优于圆孔;凹坑深度增加有利于提高三角形凹坑孔的气膜冷却效率;在

=0.5、1.0时

V形凹坑孔的气膜冷却效率随凹坑深度增加而提高

但在

=1.5时

气膜冷却效率呈先增大后减小的趋势;在相同凹坑深度下

V形凹坑孔下游的气膜冷却性能相比三角形凹坑孔更好

但凹坑深度为

D、M

=1.5时情况则相反。

Abstract

In order to improve the film cooling efficiency of the turbine blades

triangular crater holes and V-shaped crater holes were designed based on cylindrical holes

and the influence of different crater depths was discussed. Pressure sensitive paint technology was used to measure the adiabatic film cooling efficiency under different blowing ratios

. Results show that the film cooling performance of the crater holes is superior to that of the cylindrical hole at all blowing ratios. Increasing crater depth is beneficial for triangular crater holes to improve film cooling efficiency. The film cooling efficiency of V-shaped crater holes increases with the increase of crater depth at

=0.5 and 1.0

but the film cooling efficiency first increases and then decreases at

=1.5. At the same crater depth

the downstream film co

oling performance of V-shaped crater holes is better than that of triangular crater holes

but the opposite is true when the crater depth is

and

=1.5.

关键词

Keywords

references

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