| 外涵引气加力喷油杆冷却特性模拟实验 |
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| 引用本文： | 闫宝华,樊未军,李瑞明,杨茂林.外涵引气加力喷油杆冷却特性模拟实验[J].航空动力学报,2008,23(10):1788-1794. |
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| 作者姓名： | 闫宝华 樊未军 李瑞明 杨茂林 |
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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,北京,100191 |
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| 摘 要： | 根据实际需要,提出了新型外涵引气双层壁喷油杆的结构方案.共设计了不同结构尺寸的8种新型双层喷油杆冷却套,在流动特性研究的基础上进一步对其换热特性和高温工况下流动性能进行了对比实验.综合其引气和冷却性能,对比八种尺寸套管,选取了较为合适的冷却套管结构尺寸.并对这种尺寸的套管进行了油杆内壁温度沿杆高的变化、油杆内壁温度随冷却气总压的变化及油杆内壁温度随套管进口雷诺数的变化的研究.实验表明:可以有效从外涵引气(压差850 Pa时,引气量9 g/s),能够较大降低油杆内壁温度(冷却效率0.7以上).
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| 关 键 词： | 加力燃烧室 喷油杆 气冷 |
| 收稿时间： | 2007/10/22 0:00:00 |
| 修稿时间： | 2007/12/17 0:00:00 |
Experimental research on the cooling characteristics of an afterburner fuel injector with double-wall construction |
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| YAN Bao-hu,FAN Wei-jun,LI Rui-ming and YANG Mao-lin.Experimental research on the cooling characteristics of an afterburner fuel injector with double-wall construction[J].Journal of Aerospace Power,2008,23(10):1788-1794. |
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| Authors: | YAN Bao-hu FAN Wei-jun LI Rui-ming and YANG Mao-lin |
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| Institution: | YAN Bao-hua,FAN Wei-jun,LI Rui-ming,YANG Mao-lin (School of Jet Propulsion,Beijing University of Aeronautics , Astronautics,Beijing 100191,China) |
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| Abstract: | A new afterburner fuel injector with double-wall construction was presented to meet the actual requirements.8 test pieces of new fuel injector casings with different sizes were designed in this research.The heat transfer characteristics and cooling air flow performance were tested based on previous flow characteristics research.In view of the air extraction and cooling performance,an optimum cooling case was selected.Then,this casing of fuel injector was researched with respect to the distribution of inject... |
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| Keywords: | afterburner fuel injector air cooling |
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