Enhancing the hydrodynamic performance of a tapered swept-back wing through leading-edge tubercles
Enhancing the hydrodynamic performance of a tapered swept-back wing through leading-edge tubercles
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通过前缘结节增强锥形后掠翼的流体动力性能
DOI：
10.1007/s00348-018-2557-5
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发表时间：
2018-05
影响因子：
2.4
通讯作者：
Zhong Yisen
中科院分区：
文献类型：
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作者：
Wei Zhaoyu;Lian Lian;Zhong Yisen
在极低雷诺数（Re）下在机翼上设置前缘（LE）结节的流体动力学益处至今尚未完全阐明，尽管在相对较高雷诺数下的益处已得到充分研究。通过在Re（此处“Re”后可能内容不完整）下的风洞测试……
The hydrodynamic benefit of implementing leading-edge (LE) tubercles on wings at very low Reynolds numbers (Res) has not been thoroughly elucidated to date, though their benefits at relatively higherRes are well-studied. Through wind tunnel testing atRe= 5.5 × 104, we found that the LE tubercles increase the lift at all pitch angles tested and slightly reduce the drag at a pitch angle of 4° <α< 10°, which finally results in a significant hydrodynamic performance enhancement at lower pitch angles. Flow visualization reveals that the hydrodynamic performance enhancement is due to the favourable attached flows downstream of the tubercle peaks. The attached flows are believed to be closely related to the downwash and momentum exchange within the boundary layers, which originate from surface and streamwise-aligned counter-rotating vortex pairs (CVPs).
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DOI：
10.2514/6.2008-584
发表时间：
2008-01
期刊：
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