Numerical experiments on the transition of tornado-like vortices by a nonhydrostatic axisymmetric model

Yuhei Hayashi, Tetsuya Takemi, Yoshiaki Miyamoto

研究成果: Article査読

抄録

The transition of tornado-like vortices is numerically investigated with the use of a nonhydrostatic axisymmetric model. Tornado-like vortices are generated by imposing a specified external force along the central axis of the computational domain that is rotating at a constant angular velocity. When the vortex transition from one to two-celled structure occurs, there is an overshoot of the radial inflow near the surface. The overshooting flow turns upward, directing outward to a larger radius. At the same time, downdraft penetrates to the surface at the rotating axis. The overshoot is generated by coupled effects of inward advection and inward pressure gradient force. The downdraft is caused by downward pressure gradient.

本文言語English
ページ(範囲)125-135
ページ数11
ジャーナルJournal of Wind Engineering
41
4
DOI
出版ステータスPublished - 2016 10月
外部発表はい

ASJC Scopus subject areas

  • 再生可能エネルギー、持続可能性、環境

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