ライブラリ登録: Guest
Second Symposium on Turbulence and Shear Flow Phenomena
June, 27-29, 2001, KTH, Stockholm, Sweden

DOI: 10.1615/TSFP2

THE VORTEX RING IMPINGING ONTO A GROUND SURFACE

pages 283-288
DOI: 10.1615/TSFP2.1210
Get accessGet access

要約

As a part of the laboratory experiment on a micro-burst, the instantaneous velocity fields of an impulse-driven vortex ring impinging onto a normal wall have been investigated. The air flow has been visualized by filling ethylene glycol smoke. The instantaneous velocity fields induced by a vortex ring were measured by employing the PIV in which the cross correlation method was used.
It was shown the interactions between primary vortex ring and induced secondary vortex ring. The horizontal and vertical velocity distribution across the vortex core was discussed. The time evolution of circulation in vertical cross section can be fitted to the theoretical equation for that of incompressible viscous vortex. These results were validated by comparison with the atmospheric microburst.

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