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论文:2018,Vol:36,Issue(5):963-969 |
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引用本文： |
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姚军锴, 何海波, 周丹杰, 史志伟, 杜海. 等离子体激励对飞翼布局飞行器增升及流态影响[J]. 西北工业大学学报 |
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Yao Junkai, He Haibo, Zhou Danjie, Shi Zhiwei, Du Hai. Effects of Plasma Actuator Discharge on Lift-Enhancement and Flow Patterns of Flying Wing Aircraft[J]. Northwestern polytechnical university |
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| 等离子体激励对飞翼布局飞行器增升及流态影响 |
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| 姚军锴1, 何海波1, 周丹杰1, 史志伟2, 杜海2 |
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1. 北京机电工程研究所, 北京 100074;
2. 南京航空航天大学 航空宇航学院, 南京 210016 |
| 摘要: |
| 将纳秒脉冲等离子体激励器应用于飞翼布局飞行器上，在-4°~28°攻角范围内，开展了激励器布置位置和放电频率对增升效果的影响研究，采用油流显示方法分析了不同攻角下激励器作用与否表面流态随攻角的演化规律。研究结果表明，等离子体激励器通过放电能够在大攻角时实现飞翼布局飞行器的增升；布置位置和放电频率对增升效果的影响较大，布置于飞行器前缘的激励器能够获得最佳的控制效果，存在最优的放电频率，在该频率下流动分离被有效抑制，增升效果最佳；油流显示结果表明激励器对分离流的控制机理在于施加激励后对剪切层注入能量，增加了分离涡强度，促进了剪切层外高速与内部低速气流的掺混，有效抑制了分离的发生。 |
| 关键词:
等离子体
飞翼布局
增升
油流
攻角
流动分离
流动显示
风洞试验
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| Effects of Plasma Actuator Discharge on Lift-Enhancement and Flow Patterns of Flying Wing Aircraft |
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| Yao Junkai1, He Haibo1, Zhou Danjie1, Shi Zhiwei2, Du Hai2 |
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1. Beijing Electro-Mechanical Engineering Institute, Beijing 100074, China;
2. College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
| Abstract: |
| The nanosecond pulsed plasma discharge actuator is used on a flying wing aircraft. At the angles of attack rang from -4° to 28°, the impact of plasma actuator arrangement position and discharge frequency on lift-enhancement effect is tested. Oil flow visualization is used to investigate the surface flow pattern varies with angles of attack for the plasma actuator turned on and off. The result indicates that lift-enhancement can be achieved through the actuator discharges at large angles of attack on flying wing aircraft. The arrangement position and discharge frequency both have a significant impact on lift-enhancement effect. The actuator which arranged at the leading edge of the aircraft could get the best lift-enhancement effect. There exists an optimal discharge frequency, flow separation under this frequency can be effectively suppressed, which results the best lift-enhancement effect. The flow visualization test shows that the control mechanisms of the plasma actuator are to inject energy to the shear layer, thus increased the vortex strength. The vortices strengthen the mixing of the outer high-speed fluid with inner low-speed fluid, which effectively restrains the separation. |
| Key words:
plasma actuator
flying wing
lift-enhancement
oil flow
angle of attack
flow separation
flow visualization
wind tunnel experiment
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| 收稿日期: 2017-09-09
修回日期:
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| DOI: |
| 通讯作者:
Email： |
| 作者简介: 姚军锴(1989-),北京机电工程研究所工程师,主要从事飞行器气动布局设计研究。
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