| 全离散孔气膜冷却实验研究 |
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| 引用本文： | 吴伟民,张青藩,李亚峰.全离散孔气膜冷却实验研究[J].航空动力学报,1994,9(4):387-390,443. |
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| 作者姓名： | 吴伟民 张青藩 李亚峰 |
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| 作者单位： | 航空燃气轮机研究所，南京航空航天大学 |
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| 摘 要： | 模拟加力燃烧室工况，采用两种不同开孔率的离散孔板，研究了在不同温度、压差等情况下的冷却效率和换热系数，得到了一些有价值的冷却换热规律及相应的实验公式。
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| 关 键 词： | 气膜冷却 冷却效率 实验 燃烧室 |
| 收稿时间： | 1993/11/1 0:00:00 |
| 修稿时间： | 2/1/1994 12:00:00 AM |
EXPERIMENTAL INVESTIGATION ON FULL COVERAGE DISCRETE HOLE FILM COOLING |
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| Wu Weiming,Zhang Qingfan and Li yafeng.EXPERIMENTAL INVESTIGATION ON FULL COVERAGE DISCRETE HOLE FILM COOLING[J].Journal of Aerospace Power,1994,9(4):387-390,443. |
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| Authors: | Wu Weiming Zhang Qingfan and Li yafeng |
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| Institution: | Aeror gas Turbine Establishment;2nd Dept.,Nanjing University of Aeronautics and Astronautics,Nanjing 210016;2nd Dept.,Nanjing University of Aeronautics and Astronautics,Nanjing 210016 |
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| Abstract: | A heat shield with full coverage discrete hole film cooling has practical application in some afterburners.Effects of geometric parameters and flow parameters of the heat shield on effectiveness of film cooling were investigated experimentally.A convective heat transfer coefficient of the film cooling was defined as h g=q c/(T g-T w) ,where q c is heat flux obtained by solving heat balance equation for the tested plate with discrete holes,and T g and T w are gas temperature and tested plate wall temperature,respectively.A semiempirical expression for calculating heat transfer coefficient is provided for a given diameter of the discrete holes and their distribution.It might be useful to calculating heat shield temperature. |
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| Keywords: | Airfilm cooling blades Cooling Experiment Combustion chambers |
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