20.500.12556/RUL-116997 Cavitation bubble collapse in a vicinity of a liquid-liquid interface basic research into emulsification process The initial motivation for the study was to gain deeper understanding into the background of emulsion preparation by ultrasound (cavitation). In our previous work (Perdih et al., 2019) we observed rich phenomena occurring near the liquid-liquid interface which was exposed to ultrasonic cavitation. Although numerous studies of bubble dynamics in different environments (presence of free surface, solid body, shear flow and even variable gravity field) exist, one can find almost no reports on the interaction of a bubble with a liquid-liquid interface. In the present work we conducted a number of experiments where single cavitation bubble dynamics was observed on each side of the oil-water interface. These were accompanied by corresponding simulations. We investigated the details of bubble interface interaction (deformation, penetration). As predicted, by the anisotropy parameter the bubble always jets toward the interface if it grows in the lighter liquid and correspondingly away from the interface if it is initiated inside the denser liquid. We extended the analysis to the relationships of various bubble characteristics and the anisotropy parameter. Finally, based on the present and our previous study (Perdih et al., 2019), we offer new insights into the physics of ultrasonic emulsification process. cavitation liquid-liquid interface bubble oil emulsion simulation kavitacija mehurčki emulzija true false true Angleški jezik Slovenski jezik Članek v reviji 2020-06-18 11:02:38 2020-06-18 11:02:45 2022-08-29 03:40:24 0000-00-00 00:00:00 2020 0 0 15 str. Vol. 68, art. 105224 Nov. 2020 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 532.528(045) 1350-4177 10.1016/j.ultsonch.2020.105224 20084995 RAZ_Orthaber_Uros_2020.pdf RAZ_Orthaber_Uros_2020.pdf 1 3EF04E4B7882F812B596006484698632 fc7c3a54cad2f5ec190f090d1f1e7ec54111f972cb5cc2416b893a87ed147585 11e39621-a1b9-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=130767 https://www.sciencedirect.com/science/article/pii/S1350417720307835 1 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=130766 Fakulteta za strojništvo 0 0 0