| 后掠翼身交接区流动结构及参数影响研究 |
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| 引用本文： | 张华,吕志咏.后掠翼身交接区流动结构及参数影响研究[J].实验流体力学,2000,14(2):16-20. |
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| 作者姓名： | 张华 吕志咏 |
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| 作者单位： | 北京航空航天大学流体力学研究所,北京,100083 |
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| 基金项目： | 国防科技预研基金资助项目!(96J1 3A2 1 ) |
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| 摘 要： | 在水槽中利用激光片光源及荧光素钠染色液显示方法 ,研究了圆柱、机翼与平板交接区及后掠圆柱、后掠机翼变迎角情况下的干扰流场结构、特性及参数影响规律。结果表明 ,除Re数之外模型迎角、后掠角等参数对干扰区马蹄涡特性有很大影响。研究发现后掠圆柱及后掠机翼在一定条件下存在一类既不同于马蹄涡也不同于卡门涡的空间稳定发展的三维旋涡系即背涡。讨论了干扰背涡产生的机制及其与马蹄涡的相互关系。
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| 关 键 词： | 翼身交接区 马蹄涡 背涡 后掠角 |
| 修稿时间： | 2000-01-28 |
Experimental investigation of vortex characteristics in swept wing/body junctions |
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| ZHANG Hua,LU Zhi-yong.Experimental investigation of vortex characteristics in swept wing/body junctions[J].Experiments and Measur in Fluid Mechanics,2000,14(2):16-20. |
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| Authors: | ZHANG Hua LU Zhi-yong |
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| Abstract: | Experimental investigation of vortex characteristics in swept wing/body junctions has been performed with laser light sheet and sodium fluorescence dyed liquid method in the water channel of BUAA. The results show that in addition to Reynolds number, the angle of attack and the swept angle are also much important parameters that influence the vortex characteristics. It is found that in swept cylinder/plate and swept wing/plate conditions there exists a new kind of 3 D steady vortex system back vortex, which is different from the horseshoe vortex and the Karman vortex. The back vortex comes from the rear part of the junctions and extends into space. The forming mechanism of this back vortex system and its relationship with horseshoe vortex system are also discussed. |
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| Keywords: | wing/body junctions horseshoe vortex back vortex swept angle |
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