Wake Calculations around 2-Dimensional Elliptic Cylinders by Time-Dependent Vorticity Transport Equation

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概要

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• A new method to predict near wake flow is proposed where the time dependent vorticity transport equation and the boundary layer equation are used as governing equations. The flow field is supposed to be that made by a sudden move of a body to which a vorticity layer is attached. The attached vorticity layer is equivalent to the steady boundary layer. The flow field is solved by the time marching method. The two-equations model is invoked for the turbulent closure. The wakes of three 2-dimensional elliptic cylinders are calculated which are significantly separated and recirculating. The wake flow of a flat plate is calculated, in advance, to make sure the propriety of the present method. As far as the near wake flows are concerned, satisfactory results are obtained within a reasonable computing time. Recirculating and fluctuating flow fields are nicely simulated. The viscous drag is also calculated by making use of the results of wake calculations.

• 社団法人日本船舶海洋工学会の論文

著者

• 茂酸 一紘

  Hiroshima University Department Of Naval Architecture And Ocean Engineering

• 伊藤 暢基

  Hiroshima University, Department of Naval Architecture and Ocean Engineering

関連論文

• Wake Calculations around 2-Dimensional Elliptic Cylinders by Time-Dependent Vorticity Transport Equation

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