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COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Experimental study of penetration depth produced by a plunging jet system.
Submission Author:
Pedro José Miranda Lugo , SP , Brazil
Co-Authors:
Douglas Ricardo Sansão, L. Enrique Ortiz-Vidal, Oscar Mauricio Hernandez Rodriguez, Pedro José Miranda Lugo
Presenter: Pedro José Miranda Lugo
doi://10.26678/ABCM.COBEM2017.COB17-2042
Abstract
It was studied the phenomenon of air entrainment and depth penetration reached by the air entrained by a vertical plunging jet system. Breaking and coalescence bubbles process were also study by an optical technique to understand the kinetic energy dissipation. An experimental setup was designed and constructed in order to carry out a set of experiments using water like working fluid. We tested different liquid flow with various Nozzle heights. The plunging jet nozzle was carefully designed to ensure a fully developed turbulent velocity profile inside it. A high-speed camera was used to film air entrainment flow induced by a water jet impacting a stagnated surface in a transparent acrylic reservoir with a water volume previously chosen. The experimental results showed greater penetration depths with greatest water flow and lowest Nozzle heights. Furthermore, we noticed that both the higher Nozzle height and the greater liquid flow, the more air entrainment. The results obtained are in agreement with data reported in the literature.
Keywords
Air entrainment, penetration depth, plunging jet, image processing
