| 弯曲段壁面冲击发散冷却效率的实验 |
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| 引用本文： | 曹俊,杨卫华,石蕊,郝旭生,宋双文.弯曲段壁面冲击发散冷却效率的实验[J].推进技术,2011,32(4):479-484. |
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| 作者姓名： | 曹俊 杨卫华 石蕊 郝旭生 宋双文 |
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| 作者单位： | 1. 中国航空动力机械研究所,湖南株洲,412002
2. 南京航空航天大学能源与动力学院,江苏南京,210016 |
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| 基金项目： | 南京航空航天大学基本科研业务费专项科研项目(NS2010053) |
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| 摘 要： | 为了研究回流燃烧室弯曲段采用冲击发散冷却结构形式对冷却效率的影响规律,设计了多种不同几何尺寸的计算模型,采用试验方式分别对其冷却效果进行了试验研究,得出了如下结论：（1）吹风比对冷却效率影响显著,随着吹风比的增大冷却效率升高。沿整个弯曲段冷却效率呈现先增加后减小的趋势,但是变化幅度很小。（2）弯曲段冲击发散冷却结构发散孔倾角对冷却效率影响很大,冷却效率随着发散孔倾角的减小而增大。（3）发散孔纵向间距小的发散孔板冷却效率高于纵向间距大的发散孔板的冷却效率。
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| 关 键 词： | 回流燃烧室 结构设计 传热 冷却效率 |
| 收稿时间： | 7/8/2010 12:00:00 AM |
| 修稿时间： | 3/4/2011 12:00:00 AM |
Film cooling effectiveness experiment of impingementeffusion cooling in curved section |
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| CAO Jun,YANG Wei-hu,SHI Rui,HAO Xu-sheng and SONG Shuang-wen.Film cooling effectiveness experiment of impingementeffusion cooling in curved section[J].Journal of Propulsion Technology,2011,32(4):479-484. |
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| Authors: | CAO Jun YANG Wei-hu SHI Rui HAO Xu-sheng and SONG Shuang-wen |
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| Institution: | CAO Jun1,YANG Wei-hua2,SHI Rui2,HAO Xu-sheng2,SONG Shuang-wen1(1.Chinese Avation Powerplant Research Inst.,Zhuzhou 412002,China,2.Coll.of Energy and Power,Nanjing Univ.of Aeronautics and Astronautics,Nanjing 210016,China) |
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| Abstract: | In order to experimentally study the cooling effectiveness of impingement effusion cooling in curved section of combustion chamber,several test pieces with different geometrical dimensions were designed.The research results from the experiment show that: there is a obvious effect for the blowing ratio on the cooling effectiveness,and the cooling effectiveness is increased with the increase of blowing ratio.Initially,the cooling effectiveness is slowly increased on the effusion plate,and then is keeps a stea... |
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| Keywords: | Reverse-flow combustion chamber Structural design Convective heat transfer Cooling effectiveness |
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