简报燃气轮机涡轮导叶热管冷却效果对比研究

doi:10.7523/j.issn.2095-6134.2014.06.018

中国科学院大学学报 ›› 2014, Vol. 31 ›› Issue (6): 846-850.DOI: 10.7523/j.issn.2095-6134.2014.06.018

• 简报 • 上一篇

简报燃气轮机涡轮导叶热管冷却效果对比研究

占丽媛^1,2, 李玉华^1,2, 姜玉雁¹, 唐大伟¹

1. 中国科学院工程热物理研究所, 北京 100190;
2. 中国科学院大学, 北京 100190

收稿日期:2013-10-30 修回日期:2014-01-03
通讯作者: 唐大伟
基金资助:
国家自然科学基金(51306186)资助

Performance of heat-pipe cooling of turbine blade

ZHAN Liyuan^1,2, LI Yuhua^1,2, JIANG Yuyan¹, TANG Dawei¹

1. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China;
2. University of Chinese Academy of Sciences, Beijing 100190, China

Received:2013-10-30 Revised:2014-01-03

摘要/Abstract

摘要：

以一种涡轮直叶片为研究对象,分别采用热管冷却和冲击冷却对其进行气热耦合数值模拟计算,对比分析两种冷却方式的效果.通过对叶片的表面温度、中截面的换热系数以及总体冷却效率的对比,分析结果表明,使用热管冷却时,叶片尾缘的温度分布更加均匀,转捩点附近低温区范围分布更广.在相同的主流条件下,热管冷却能达到甚至超过冲击冷却的效果.

关键词: 涡轮叶片, 热管冷却, 冲击冷却, 气热耦合, 转捩

Abstract:

Two straight turbine blades with different internal structures and different cooling schemes have been studied using conjugate heat transfer method. We compare the performances of heat-pipe cooling and impingement cooling through analyzing the temperature on external surface,heat transfer coefficient of middle-span, and overall cooling effectiveness (OCE). The results show that the heat-pipe cooling leads to more uniform temperature distribution along the tailing edge of the blade and wider low-temperature region around the transition point. It has been found that the effectiveness of the heat-pipe cooling reaches to or even exceeds that of the impingement cooling under the same primary flow conditions.

Key words: turbine blade, heat-pipe cooling, impingement cooling, conjugate heat transfer, turbulence transition

中图分类号:

V231.1

占丽媛, 李玉华, 姜玉雁, 唐大伟. 简报燃气轮机涡轮导叶热管冷却效果对比研究[J]. 中国科学院大学学报, 2014, 31(6): 846-850.

ZHAN Liyuan, LI Yuhua, JIANG Yuyan, TANG Dawei. Performance of heat-pipe cooling of turbine blade[J]. , 2014, 31(6): 846-850.

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简报燃气轮机涡轮导叶热管冷却效果对比研究

Performance of heat-pipe cooling of turbine blade

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