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Provedor de dados:  ArchiMer
País:  France
Título:  Experimental study of the bubble sweep-down phenomenon on three bow designs
Autores:  Mallat, Bachar
Germain, Gregory
Gaurier, Benoit
Druault, Philippe
Billard, Jean-yves
Data:  2018-01
Ano:  2018
Palavras-chave:  Bubble sweep-down
Experimental trials
Bow geometry
Bubble cloud dynamics
Resumo:  The bubble sweep-down phenomenon around the oceanographic research vessels generates acoustic perturbations. A specific experimental protocol has been developed in a wave and circulating tank to study this phenomenon. This protocol is used to carry out trials on three different ship models in order to study the influence of the bow geometry on the bubble generation. For different test configurations, bubble clouds are described and compared in terms of area, maximal depth and vertical velocity to highlight bubble cloud dynamics surrounding the three ship models. The relation between the hydrodynamic flow field and the bubble generation is studied by means of Particle Image Velocimetry (PIV) measurements to study the phenomenon by the use of phase averaged velocity fields. The overall results enable us to characterize the bubble sweep-down phenomenon from the air bubble generation and propagation to the frequency of occurrence and the clouds behaviour.
Tipo:  Text
Idioma:  Inglês

Editor:  Pergamon-elsevier Science Ltd
Formato:  application/pdf
Fonte:  Ocean Engineering (0029-8018) (Pergamon-elsevier Science Ltd), 2018-01 , Vol. 148 , P. 361-375
Direitos:  2017 Elsevier Ltd. All rights reserved.


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