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An analytical modelAnalytical model isTornado-like vortices proposedTouch-down to predict the wind field in tornadoTornado-like vortices after the touch-down stage. The radial and vertical velocities are modeled from the mass conservation and the tangential velocity is derived from the momentum conservation. Three velocity components in the corner region of tornadoTornado-like vortices are well-explained by the proposed model. The predicted three velocity components show good agreement with those obtained from the numerical simulation using the LES turbulence modelLES turbulence model.

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An Analytical Model for Prediction of Wind Fields in Tornado-Like Vortices After Touch-Down Stage

  • 会议论文

  • 发表日期：

    2026年

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  • H. Otori,
  • T. Ishihara

摘要

An analytical modelAnalytical model isTornado-like vortices proposedTouch-down to predict the wind field in tornadoTornado-like vortices after the touch-down stage. The radial and vertical velocities are modeled from the mass conservation and the tangential velocity is derived from the momentum conservation. Three velocity components in the corner region of tornadoTornado-like vortices are well-explained by the proposed model. The predicted three velocity components show good agreement with those obtained from the numerical simulation using the LES turbulence modelLES turbulence model.