| 发散孔纵向波纹隔热屏气膜冷却特性 |
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| 引用本文： | 唐婵,常海萍. 发散孔纵向波纹隔热屏气膜冷却特性[J]. 航空动力学报, 2009, 24(1): 18-24 |
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| 作者姓名： | 唐婵 常海萍 |
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| 作者单位： | 南京工程学院,能源与动力工程学院,南京,211167;南京航空航天大学,能源与动力学院,南京,210016 |
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| 摘 要： | 对燃烧室内开有发散孔的纵向波纹隔热屏进行了数值模拟.研究隔热屏的四种结构参数开孔率、波纹板高度、孔径和冷却通道高度的改变对隔热屏冷却效果的影响.研究表明:在气膜孔出流总量相同的情况下,3%开孔率比6%开孔率的隔热屏平均冷却效率较高;波纹板高度对隔热屏冷却效果影响较大,波纹板无量纲高度为1%比波纹板无量纲高度为2%和3.33%的隔热屏平均冷却效率高;孔径和冷却通道高度的改变对隔热屏冷却效果几乎没有影响.
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| 关 键 词： | 波纹隔热屏 冷却效率 气膜冷却 数值模拟 发散孔 |
| 收稿时间： | 2007-11-21 |
| 修稿时间： | 2008-05-19 |
Numerical simulation of effusion holes on the longitudinal ripple heat shield |
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| TANG Chan and CHANG Hai-ping. Numerical simulation of effusion holes on the longitudinal ripple heat shield[J]. Journal of Aerospace Power, 2009, 24(1): 18-24 |
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| Authors: | TANG Chan and CHANG Hai-ping |
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| Affiliation: | 1.College of Energy and Power Engineering, Nanjing Institute of Technology, Nanjing 211167, China2.College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
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| Abstract: | The numerical simulation was used to study the effusion holes on the longitudinal wavy liner in the combustor.The investigation focused on the parameters affecting cooling effectiveness,including: opening ratio,height of ripple board,diameter of holes and height of cooling passage.Given the same total flow effusion from holes,the results show that the heat shield gets a higher average cooling effectiveness when the opening ratio is 3% compared with 6%;cooling effectiveness is sensitive to the height of ripp... |
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| Keywords: | wavy liner cooling effectiveness film cooling numerical simulation effusion hole |
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