| 简报燃气轮机涡轮导叶热管冷却效果对比研究 |
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| 作者姓名： | 占丽媛 李玉华 姜玉雁 唐大伟 |
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| 作者单位： | 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 |
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| 基金项目： | 国家自然科学基金(51306186)资助 |
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| 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.
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| 关 键 词： | 涡轮叶片 热管冷却 冲击冷却 气热耦合 转捩 |
| 收稿时间： | 2013-10-30 |
| 修稿时间： | 2014-01-03 |
Performance of heat-pipe cooling of turbine blade |
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| Authors: | ZHAN Liyuan LI Yuhua JIANG Yuyan TANG Dawei |
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| Institution: | 1. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China;
2. University of Chinese Academy of Sciences, Beijing 100190, China |
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| 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. |
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| Keywords: | turbine blade heat-pipe cooling impingement cooling conjugate heat transfer turbulence transition |
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