An Experimental Investigation on the Air Entrainment by Plunging Jets

The air entrained by the impact of jets ejected by plunging breakers was studied both theoretically and experimentally using laboratory plunging jets which are in horizontal relative motion with respect to the free surface. In order to investigate the influence of the horizontal translation on the air entrainment, a vertical, circular, laminar jet that plunges continuously onto a receiving water pool was utilized. Three different air entrainment regimes were identified for different values of the non-dimensional parameters that control the process: the Fr number based on the translation velocity and jet diameter, and the ratio between the jet translation velocity and the jet impact velocity…

Author: Gomez-Ledesma, Ramon

Source: University of Maryland

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