气膜孔内局部堵塞对气膜冷却特性的影响

黄珂楠; 张靖周; 郭文

doi:10.13224/j.cnki.jasp.2014.06.010

气膜孔内局部堵塞对气膜冷却特性的影响

doi: 10.13224/j.cnki.jasp.2014.06.010

1. 南京航空航天大学能源与动力学院江苏省航空动力系统重点实验室, 南京 210016;
2. 先进航空发动机协同创新中心, 北京 100191;
3. 中国航空工业集团公司中国燃气涡轮研究院, 成都 610500

基金项目:

国家自然科学基金（51276090）

详细信息

作者简介:
黄珂楠（1989- ），女，安徽马鞍山人，硕士，主要从事传热研究.

中图分类号: V233.1;V233.2
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- 文章访问数: 1563
- HTML浏览量: 5
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- 被引次数: 0
出版历程
- 收稿日期: 2013-03-26
- 刊出日期: 2014-06-28

Effect of partial blockage inside film hole on film cooling characteristics

1. Jiangsu Province Key Laboratory of Aerospace Power System, College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
2. Co-Innovation Center of Advanced Aero-Engine, Beijing 100191, China;
3. China Gas Turbine Establishment, Aviation Industry Corporation of China, Chengdu 610500, China

摘要

摘要: 在吹风比为0.3~1.5，堵塞比为0.1~0.5范围内，对平板上单排倾斜气膜孔内局部堵塞所引起的冷气射流流动和冷却特性变化进行了数值研究，分析了堵塞比、堵塞位置和吹风比对绝热气膜冷却效率的影响.在研究参数范围内的研究结果表明：气膜孔出口端前缘的局部堵塞有利于抑制肾形涡，对气膜孔下游的绝热气膜冷却效率有改善作用，并且随着堵塞比和吹风比的增加，对冷却效果的改善越为明显.而在气膜孔出口端尾缘或侧边的堵塞则在较大的堵塞比下削弱气膜冷却效果.相对于气膜孔出气端的局部堵塞，在气膜孔进气端和中部的堵塞对绝热气膜冷却效率的影响要微弱得多.
- 气膜冷却 /
- 堵塞 /
- 气膜孔 /
- 绝热气膜冷却效率 /
- 流场
Abstract: Numerical investigations were performed to study the effects of partial blockage inside discrete holes on coolant jet flow and film cooling characteristics over a flat plate from a row of inclined holes, under the blowing ratios of 0.3-1.5 and blockage ratios of 0.1-0.5. The influences of blockage ratio, blockage position and blowing ratio on adiabatic film cooling effectiveness were revealed. The results in parameter range show that the partial blockage located at the leading edge near film jet exit is beneficial for suppressing the motion of kidney vortex pair, resulting in enhancement of the adiabatic film cooling effectiveness, especially under higher blowing ratio and higher blockage ratio cases. The partial blockage located at the trailing or lateral edges near the film jet exit weaken the adiabatic film cooling effectiveness under higher blockage ratio cases. Compared to the corresponding case of partial blockage located near the film jet exit, the partial blockage located at the film jet inlet or middle position has less impact on the film cooling.
- film cooling /
- blockage /
- film hole /
- adiabatic film cooling effectiveness /
- fluid flow field

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