| 常压、双涵进气条件下小突片强化混合研究 |
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| 引用本文： | 陈方,吴寿生,魏福清,黄勇.常压、双涵进气条件下小突片强化混合研究[J].航空动力学报,2002,17(1):35-39. |
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| 作者姓名： | 陈方 吴寿生 魏福清 黄勇 |
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| 作者单位： | 北京航空航天大学,动力系,北京,100083 |
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| 摘 要： | 在常压、双涵进气条件下 ,以常规环形混合器为基准 ,通过不同小突片强化混合结构的对比试验 ,初步探讨了小突片的个数、安装角度等结构参数对排气混合系统气动性能的影响。试验结果表明 :小突片能很好地强化内外涵气流的混合 ,使下游流场出现明显的变形 ,系统的卷吸量、混合均匀性均得到改善 ,但是压头损失系数有所增加 ;多个小突片沿周向均匀分布 ,且交替向内外倾斜 ,能更有效地强化混合。
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| 关 键 词： | 小突片 强化混合 双涵进气 排气混合器 |
| 文章编号： | 1000-8055(2002)01-035-05 |
| 收稿时间： | 2000/12/5 0:00:00 |
| 修稿时间： | 2000年12月5日 |
Investigation on Two-Flow Mixing Enhancement by Small Tabs at Atmospheric Pressure |
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| CHEN Fang,WU Shou sheng,WEI Fu qing and HUANG Yong.Investigation on Two-Flow Mixing Enhancement by Small Tabs at Atmospheric Pressure[J].Journal of Aerospace Power,2002,17(1):35-39. |
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| Authors: | CHEN Fang WU Shou sheng WEI Fu qing and HUANG Yong |
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| Institution: | CHEN Fang,WU Shou sheng,WEI Fu qing,HUANG Yong Beijing University of Aeronautics and Astronautics,Beijing100083,China |
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| Abstract: | A variety of exhaust mixers with small tabs in comparison with a conventional annular exhaust mixer were tested at atmospheric pressure to study the effects of tab structure parameters-number and fix angles on the aerodynamic characteristics of the exhaust mixer system.The results showed that:Small tabs could enhance two flow mixing,distort downstream flowfield,increase entrainment,and improve system mixing uniformity,but the pressure loss coefficient of the system would increase a bit.Several tabs well distributed and alternately tilted inward and outward around the nozzle exit were more effective on the two flow mixing enhancement. |
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| Keywords: | small tabs mixing enhancement two flow exhaust mixer |
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