Experimental study on cooling characteristics of film cooling with trapezoid tabs

CHEN Li-qiang; YANG Wei-hua; YANG Cheng-Feng; ZHANG Jing-zhou

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Experimental study on cooling characteristics of film cooling with trapezoid tabs

更新时间：2026-07-07

- Experimental study on cooling characteristics of film cooling with trapezoid tabs
- Vol. 23, Issue 9, (2008)
- 作者机构：
  
  南京航空航天大学能源与动力学院,南京,210016
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2008
- 稿件说明：
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CHEN Li-qiang, YANG Wei-hua, YANG Cheng-Feng, et al. Experimental study on cooling characteristics of film cooling with trapezoid tabs[J]. 2008, 23(9).
DOI：

CHEN Li-qiang, YANG Wei-hua, YANG Cheng-Feng, et al. Experimental study on cooling characteristics of film cooling with trapezoid tabs[J]. 2008, 23(9). DOI：

摘要

为了研究突片对气膜冷却的影响规律

设计了3种不同堵塞比的梯形突片

采用红外摄像仪对不同形状突片冷却结构的壁面温度场进行了测试

并对气膜冷却特性的影响规律进行了实验研究.研究结果表明

与无突片的气膜冷却相比

突片的存在大大提高了气膜冷却效率和对流换热系数;冷却效率沿气流方向存在一个最佳吹风比值;对流换热系数在本实验范围内

堵塞比为0.214时气膜冷却对流换热系数最大.

Abstract

In order to study the effect of tabs on film cooling

three test pieces with different geometrical dimensions were designed

and the infrared camera was used to measure the temperature distribution on the wall.The cooling characteristics was experimentally studied.The results show that the efficiency of film cooling and the convective heat transfer coefficient of film cooling with tabs have improved markedly in the presence of tabs.The cooling efficiency has an optimal blowing ratio value along the streamwise direction;while the blockage ratio is 0.214

the convective heat transfer coefficient reaches its maximum value in the range of the experiment.

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Related Author

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Related Institution

College of Energy and Power Engineering, Nanjing University of Astonautics and Aeronautics

南京航空航天大学能源与动力学院

哈尔滨工业大学能源科学与工程学院

College of Aeronautics and Astronautics Engineering, Air Force Engineering University

Department of Training, Air Force Engineering University

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