Abstract

An experiment on the three-dimensional negative surface buoyant jets released on a sloping bottom was carried out to examine the plunging point and to classify the flow behavior. The length between the plunging point and an outlet scaled by an initial depth of the jet, Lp*, considerably decreases compared with that of the two-dimensional cases and complicatedly varies with the initial densimetric Froude number, Fo, and the slope of a bottom, S. The flow behavior was classified into three types considering the re-rising and reattachment of the jet. In addition, it was shown that the characteristics of Lp*, on the Fo-S plain can be attributed to the change of the flow type by the both parameters, Fo and S.

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