| 非定常尾迹对气膜冷却影响的数值研究 |
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| 引用本文： | 蒋雪辉,赵晓路.非定常尾迹对气膜冷却影响的数值研究[J].工程热物理学报,2005,26(2):322-324. |
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| 作者姓名： | 蒋雪辉 赵晓路 |
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| 作者单位： | 中国科学院工程热物理研究所,北京,100080;中国科学院工程热物理研究所,北京,100080 |
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| 摘 要： | 利用数值计算的方法研究了非定常尾迹对动叶气膜冷却效率的影响。在动叶叶片上开有5个气膜孔,重点研究了非定常尾迹对压力面第二个、吸力面第一个气膜孔周围的流场和温度场的影响。发现尾迹会使冷却气流的流向发生很大的改变,甚至发生"分流"、"逆流"的现象,这一点既和尾迹形成的低速区有关,也和气膜孔的位置有关。
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| 关 键 词： | 非定常尾迹 气膜冷却 数值模拟 |
| 文章编号： | 0253-231X(2005)02-0322-03 |
| 修稿时间： | 2004年11月24 |
NUMERICAL SIMULATION OF THE UNSTEADY WAKES' EFFECTS ON FILM COOLING |
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| JIANG Xue-Hui,ZHAO Xiao-Lu.NUMERICAL SIMULATION OF THE UNSTEADY WAKES' EFFECTS ON FILM COOLING[J].Journal of Engineering Thermophysics,2005,26(2):322-324. |
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| Authors: | JIANG Xue-Hui ZHAO Xiao-Lu |
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| Abstract: | Numerical calculations were performed to investigate the effects of unsteady wakes on film cooling. The details of flow fields and temperature fields around the film cooling holes were simulated when the unsteady wakes were striking and leaving the near hole region. The results showed that unsteady wake could make the directions of the cooling jet flow changed, and then make the temperature distribution around the film cooling holes changed. |
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| Keywords: | unsteady wakes film cooling numerical simulation |
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