Experimental study on convective heat transfer characteristics of film cooling with tab

YANG Wei-hua; MA Guo-feng; ZHANG Jing-zhou

Chinese

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Experimental study on convective heat transfer characteristics of film cooling with tab

更新时间：2026-07-07

- Experimental study on convective heat transfer characteristics of film cooling with tab
- Vol. 21, Issue 6, (2006)
- 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：2006
- 稿件说明：
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YANG Wei-hua, MA Guo-feng, ZHANG Jing-zhou. Experimental study on convective heat transfer characteristics of film cooling with tab[J]. 2006, 21(6).
DOI：

YANG Wei-hua, MA Guo-feng, ZHANG Jing-zhou. Experimental study on convective heat transfer characteristics of film cooling with tab[J]. 2006, 21(6). DOI：

摘要

为了研究突片对气膜冷却的影响规律

设计了3种不同堵塞比的等边三角形突片

并对其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

突片的存在提高了对流换热系数

在吹风比0.50.78时

堵塞比为0.1时气膜冷却对流传热系数最高;当吹风比为1.221.5时

堵塞比为0.27时气膜冷却对流传热系数最高。但突片的存在也增大了气流在气膜孔中的流动阻力。

Abstract

In order to study the effect of tab on film cooling

three kinds of test pieces with different geometrical parameters were designed

and the heat transfer characteristics of them were experimentally studied.The results show that the convective heat transfer coefficient of film cooling with tab is better than that without the tab.While the area ratio is 0.1

the convective heat transfer coefficient of film cooling is the best at the blow ratio of 0.50.78;while the area ratio is 0.27

the convective heat transfer coefficient gets its maximum value at the blow ratio of 1.221.5.However

because of the existence of tabs

the flow friction loss in the film hole will be increased.

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Related Author

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YANG Cheng-Feng

ZHANG Jing-zhou

XU Lei

CHANG Hai-ping

PAN Jin-dong

Related Institution

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

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

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Academy of Frontier Science, Nanjing university of Aeronautics and Astronautics

School of Power and Energy,Northwestern Polytechnical University

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