ライブラリ登録: Guest
Seventh International Symposium on Turbulence and Shear Flow Phenomena
July, 28-31, 2011, Ottawa Convention Centre, Ottawa, Canada

DOI: 10.1615/TSFP7

INFLUENCE OF SWEEPBACK ON LEADING-EDGE VORTEX STABILIZATION

pages 1-6
DOI: 10.1615/TSFP7.860
Get accessGet access

要約

The sweepback geometry characteristic of fish-like tails has been found to be insufficient for the stabilization of leading-edge vortices (LEVs) during unsteady motion. Direct force measurements and experimental visualizations, which include Particle Image Velocimetry (PIV) and Lead Precipitation, suggest that despite a strong spanwise flow in the LEV core at higher sweepback angles, the vortex breaks off and convects downstream at nearly the same time as for angles with little spanwise contribution. Despite the LEV's insensitivity to spanwise flow, the LEV and tip vortex were observed to maintain a stronger connection with one another at higher sweepback angles. This result implies that despite similar net performance for low and high sweepback angles alike, the resulting vortex-wake topologies varies dramatically from one another.

Begell Digital Portal Begellデジタルライブラリー 電子書籍 ジャーナル 参考文献と会報 リサーチ集 価格及び購読のポリシー Begell House 連絡先 Language English 中文 Русский Português German French Spain