G403 回転運動する平板周りの流れと流体力に関する研究(2)(GS-4-1 飛翔体,円柱,一般セッション)

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  • G403 Study of flow around and fluid dynamic force acting on a rotating flat plate(2)

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The flow around and unsteady fluid dynamic forces acting on a rotating flat plate in an uniform flow were calculated by discrete vortex method. Free flight experiment of flat plate was carried out to determine the falling velocity and rotation number which were used as uniform flow velocity and rotation number in the calculation. The validity of the calculation were comfirmed by comparison with the potential flow theory and visualiation using wind tunnel. Comparison between the result in the case that point vortices were shed and one in the case that no point vortices were shed showed that the effect of vortex shedding on fluid dynamic force become maximum at θ = -90° for drag and at θ = -45° for lift.

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