| 后掠翼混合层流控制机制的实验 |
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| 引用本文： | 王菲,额日其太,王强,郭辉,苏沛然.后掠翼混合层流控制机制的实验[J].航空动力学报,2010,25(4):918-924. |
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| 作者姓名： | 王菲 额日其太 王强 郭辉 苏沛然 |
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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,北京,100191
2. 北京航空航天大学,航空科学与工程学院,北京,100191 |
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| 摘 要： | 在低湍流度风洞中针对NACA64A-204翼型后掠翼模型进行混合层流控制(HLFC)实验研究.通过萘升华流动显示技术以及热线测量边界层速度的方法,研究了不同吸气量条件下HLFC对后掠翼转捩位置以及流动稳定性的影响.实验结果表明:无吸气的情况下,转捩出现在x/c≈0.4,标准和两倍抽吸量条件下,转捩位置可以达到80%弦长位置(最小压力点下游).HLFC方法可以减弱后掠翼边界层平均流的扭曲,降低扰动之间的非线性作用,减小不稳定扰动波的能量,延迟转捩获得更大的层流区.
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| 关 键 词： | 混合层流控制 流动稳定性 转捩 萘升华 热线 |
| 收稿时间： | 2010/1/18 0:00:00 |
| 修稿时间： | 3/4/2010 12:00:00 AM |
Experimental investigation of HLFC mechanism on swept wing |
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| WANG Fei,Eriqitai,WANG Qiang,GUO Hui and SU Pei-ran.Experimental investigation of HLFC mechanism on swept wing[J].Journal of Aerospace Power,2010,25(4):918-924. |
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| Authors: | WANG Fei Eriqitai WANG Qiang GUO Hui and SU Pei-ran |
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| Affiliation: | School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China |
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| Abstract: | Hybrid laminar flow control (HLFC) experiments were conducted in the low-turbulence wind tunnel on a NACA64A-204 swept airfoil. Naphthalene sublimation flow vi-sualization technology and hot-wire measurement method were taken to examine the effects of suction quantities on transition location and hydrodynamic stability. Experimental results show that transition location occurs at x/c≈0.4 in the non-suction case, and transition loca-tion can reach 80% of chord length (behind the minimum pressure point) in both standard and twice suction quantities. The HLFC methods can reduce the distortion of the velocity profile, bring down the nonlinear interaction among the disturbances, decrease the energy of dominated perturbation, and delay transition to achieve lager laminar flow region. |
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| Keywords: | hybrid laminar flow control hydrodynamic stability transition naphthalene sublimation hot-wire |
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