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The traveling distances of a single vortex ring in rotating and stably stratified fluids have been measured by means of the method of flow visualization. In rotating fluids, the normalized maximum tra...veling distance along the axis of fluid rotation is inversely proportional to the dimensionless angular velocity (T) at T>140, below which the normalized traveling distance remains to be unity. In stably stratified fluids, the maximum traveling distance in the vertical direction decreases with increasing dimensionless buoyancy frequency (K) over the examined range of K; the rate of its decrease varies appreciably at K≈180.続きを見る
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