| 复合角对涡轮叶片旋转气膜冷却效果的影响 |
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| 引用本文： | 李国庆,邓宏武,侠晖霞.复合角对涡轮叶片旋转气膜冷却效果的影响[J].航空动力学报,2010,25(2):308-313. |
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| 作者姓名： | 李国庆 邓宏武 侠晖霞 |
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| 作者单位： | 北京航空航天大学 能源与动力工程学院 航空发动机气动热力科技重点实验室, 北京 100191 |
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| 摘 要： | 对某小型燃气轮机设计工况下的涡轮动叶,采用标准k-ε湍流模型,数值模拟了复合角气膜孔对冷却效果的影响.主流雷诺数为670 000,比较了吹风比分别为0.5,1.0,1.5和2.0时,采用60°,30,°0°,-30°和-60°复合角气膜孔的气膜流动情况和冷却效果.结果表明:在旋转状态下,压力面上复合角可以有效地提高气膜冷却效果,受哥氏力的影响,朝向低半径的复合角的气膜冷却效果要好于朝向高半径;吸力面上复合角对气膜冷却效果的影响不大.
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| 关 键 词： | 复合角 气膜冷却 旋转 吹风比 涡轮 |
| 收稿时间： | 2009/1/14 0:00:00 |
| 修稿时间： | 4/1/2009 3:27:42 PM |
Numerical investigation on film cooling effectiveness of rotating blade with multihole |
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| LI Guo-qing,DENG Hong-wu and XIA Hui-xia.Numerical investigation on film cooling effectiveness of rotating blade with multihole[J].Journal of Aerospace Power,2010,25(2):308-313. |
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| Authors: | LI Guo-qing DENG Hong-wu and XIA Hui-xia |
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| Institution: | National Key Laboratory of Science and Technology on Aero-Engines, School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China |
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| Abstract: | The multihole film cooling effectiveness on rotating blade surface of an on-de-sign turbine was numerically studied by κ-ε turbulence model. Cases of 60°, 30°,0°,-30°and -60° multihole were compared under different blowing ratios when the main flow Re was 670 000. Results show that the rotating film cooling effectiveness can be greatly improved on pressure side with multihole,where the effectiveness of the multihole toward the low-radius is better than that of the multihole toward the high-radius because of the coriolis force. But the effectiveness isn't increased greatly on suction side with multihole. |
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| Keywords: | multihole film cooling rotating blowing ratio turbine |
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