| 采用多源涡技术强化燃料/空气小尺度混合研究 |
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| 引用本文： | 张玉芳,黄勇,王方,吴垚锃,肖英.采用多源涡技术强化燃料/空气小尺度混合研究[J].航空动力学报,2010,25(7):1506-1511. |
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| 作者姓名： | 张玉芳 黄勇 王方 吴垚锃 肖英 |
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| 作者单位： | 1.北京航空航天大学 能源与动力工程学院, 航空发动机气动热力科技重点实验室, 北京 100191 |
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| 基金项目： | 航空发动机气动热力科技重点实验室基金 |
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| 摘 要： | 通过数值模拟,研究了在空气入口总温为294.28 K,燃料气体为乙烷(C2H6)时在轴向旋流器出口截面上安装多个小突片的多源涡(MSV)结构对燃烧室内燃料/空气掺混效果的影响.结果表明:在每个小突片下游产生的小尺度流向涡使得局部的燃料/空气掺混加强;装有多源涡结构的燃烧室内对应的C2H6质量分数在文氏管下游2 mm截面上的混合不均匀度由不带多源涡结构时的13.0%下降到小于7.4%.在该研究的范围内,当小突片总的阻塞比增大时,对应的混合不均匀度减小,掺混效果变好.
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| 关 键 词： | 燃烧室 轴向旋流器 多源涡 强化混合 小突片 |
| 收稿时间： | 2009/5/20 0:00:00 |
| 修稿时间： | 2009/8/12 0:00:00 |
Small scale mixing enhancement of fuel/air using multi-source vortex technology |
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| ZHANG Yu-fang,HUANG Yong,WANG Fang,WU Yao-zeng and XIAO Ying.Small scale mixing enhancement of fuel/air using multi-source vortex technology[J].Journal of Aerospace Power,2010,25(7):1506-1511. |
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| Authors: | ZHANG Yu-fang HUANG Yong WANG Fang WU Yao-zeng and XIAO Ying |
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| Institution: | 1.National Key Laboratory of Science and Technology on Aero-Engines, School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China2.Institute of Automation, Naval Academy of Armamet, Beijing 100073, China |
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| Abstract: | With the multi-source vortex(MSV) structure fixed on the exit plane of axial swirler,the flow field of combustor was simulated and the effect of MSV on the mixing enhancement of fuel/air was studied.The total temperature of the air inlet was 294.28K and the fuel was ethane(C2H6).The results indicate that,a small scale streamwise vortex is produced downstream each tab,helping enhance the local mixing of fuel and air.The mixing non-uniformity is 13.0% for combustor without MSV,while it declines to smaller than 7.4% with MSV.The mixing non-uniformity decreases when the total blockage of tabs increases,indicating a mixing enhancement of fuel/air. |
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| Keywords: | combustor axial swirler multi-source vortex(MSV) mixing enhancement tab |
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