| 白亚磊,明晓,丁涛.带涡襟翼翼型流场的数值模拟[J].计算力学学报,2010,27(4):613~617 |
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| 带涡襟翼翼型流场的数值模拟 |
| Numerical simulation of the flow-field of an airfoil with eddy-flap |
| 投稿时间：2008-08-30 |
| DOI：10.7511/jslx20104007 |
| 中文关键词: 涡襟翼 分离流 流动控制 失速 |
| 英文关键词:eddy-flap separated flow flow control stall |
| 基金项目:国家973(2007CB714600)资助项目. |
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| 摘要点击次数: 1590 |
| 全文下载次数: 1356 |
| 中文摘要: |
| 以数值计算为手段,分析了带涡襟翼的翼型的流场特性,分别对迎角及扰流板偏角对翼型气动性能的影响做了分析。结果表明,在小迎角来流情况下,保持迎角不变,涡襟翼偏转角度越大,升力越小,阻力越大,呈现较好的线性关系。在大迎角情况下,绕翼型的流动发生分离,通过适当控制涡襟翼的偏转角度,能够有效的改善翼型的失速特性,从而达到流动控制的目的,迎角越大,涡襟翼所需偏转的角度越大。 |
| 英文摘要: |
| In this paper, the flow fields of an airfoil with eddy-flap are described by numerical simulation. The effect of attack angles and the eddy-flap angles on aerodynamic coefficient are studied. The results show that, at low angle of attack, the lift coefficient dropped and drag coefficient raised as the eddy-flap angle increased,. Their relationships are nearly lineal; while at the high angle of attack, the flow separated on the upper surface of the airfoil. The angle of attack increased, the angle of eddy-flap adjusting higher. The stall can be avoided by adjusts the eddy-flap angle properly as the result of flow control. |
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