FN Archimer Export Format PT J TI Experimental study of bubble sweep-down in wave and current circulating tank: Part II—Bubble clouds characterization BT AF DELACROIX, Sylvain GERMAIN, Gregory GAURIER, Benoit BILLARD, Jean-Yves AS 1:1;2:1;3:1;4:2; FF 1:;2:PDG-REM-RDT-LCSM;3:PDG-REM-RDT-LCSM;4:; C1 IFREMER, Marine Struct Lab, 150 Quai Gambetta, F-62321 Boulogne, France. IRENAV, Ecole Navale, F-29240 Brest, France. C2 IFREMER, FRANCE IRENAV, FRANCE SI BOULOGNE SE PDG-REM-RDT-LCSM IN WOS Ifremer jusqu'en 2018 copubli-france IF 1.894 TC 8 UR https://archimer.ifremer.fr/doc/00335/44577/44314.pdf LA English DT Article DE ;Bubble sweep-down;Experimental trials;Ship motions;Bow waves AB In this second part, images acquired from the specific trials developed in order to study the phenomenon of bubble sweep-down are analysed. A post-processing method has been developed to analyse the two air entrainment mechanisms described in the first part, for several test configurations. Bubble clouds are described in terms of depth, area and velocity for both vortex shedding and breaking wave bubble clouds. A parametric study is also performed to calculate the influence of each test parameter on the frequency of bubble generation. It is demonstrated that the occurrence of bubble clouds is proportional to the wave height, with a considerable influence of the phase shift between waves and motions. The overall results provide new elements for the understanding and the study of the phenomenon, with the final objective of obtaining a reliable tool that facilitates the design of research vessels. PY 2016 PD JUN SO Ocean Engineering SN 0029-8018 PU Pergamon-elsevier Science Ltd VL 120 UT 000378958600009 BP 88 EP 99 DI 10.1016/j.oceaneng.2016.05.008 ID 44577 ER EF