Results 21 to 30 of about 36,060 (256)

Influence of inlet pressure on cavitation characteristics in regulating valve

Engineering Applications of Computational Fluid Mechanics, 2020
The cavitation development process in regulating valve under different inlet pressures is investigated experimentally and numerically in our paper. The influence of inlet pressure Pin on cavitation location, shape, area and intensity is studied in axial ...
Xiumei Liu, Zihong Wu, Beibei Li, Jiyun Zhao, Jie He, Wei Li, Chi Zhang, Fangwei Xie   +7 more
doaj   +1 more source

On the gas pressure inside cavitation bubbles

Physics of Fluids, 2023
The validity of the reduced order [Delale and Pasinlioglu, “Acoustic cavitation model based on a novel reduced order gas pressure law,” AIP Adv. 11, 115309 (2021)] and of classical polytropic gas pressure laws during the response of a bubble to variations in the pressure of the surrounding liquid is investigated.
Can F. Delale, Şenay Pasinlioğlu
openaire   +2 more sources

Revealing the origins of vortex cavitation in a Venturi tube by high speed X-ray imaging

Ultrasonics Sonochemistry, 2023
Hydrodynamic cavitation is useful in many processing applications, for example, in chemical reactors, water treatment and biochemical engineering. An important type of hydrodynamic cavitation that occurs in a Venturi tube is vortex cavitation known to ...
Hitoshi Soyama, Xiaoyu Liang, Wataru Yashiro, Kentaro Kajiwara, Eleni Myrto Asimakopoulou, Valerio Bellucci, Sarlota Birnsteinova, Gabriele Giovanetti, Chan Kim, Henry J. Kirkwood, Jayanath C.P. Koliyadu, Romain Letrun, Yuhe Zhang, Jozef Uličný, Richard Bean, Adrian P. Mancuso, Pablo Villanueva-Perez, Tokushi Sato, Patrik Vagovič, Daniel Eakins, Alexander M. Korsunsky   +20 more
doaj   +1 more source

The Quest for the Most Spherical Bubble [PDF]

, 2013
We describe a recently realized experiment producing the most spherical cavitation bubbles today. The bubbles grow inside a liquid from a point-plasma generated by a nanosecond laser pulse. Unlike in previous studies, the laser is focussed by a parabolic
de Bosset, Aurele, Dorsaz, Nicolas, Farhat, Mohamed, Kobel, Philippe, Obreschkow, Danail, Tinguely, Marc   +5 more
core   +2 more sources

Cavitation bubble dynamics

Ultrasonics Sonochemistry, 1997
The dynamics of cavitation bubbles on water is investigated for bubbles produced optically and acoustically. Single bubble dynamics is studied with laser produced bubbles and high speed photography with framing rates up to 20.8 million frames per second. Examples for jet formation and shock wave emission are given.
W, Lauterborn, C D, Ohl
openaire   +2 more sources

Sonoporation from Jetting Cavitation Bubbles [PDF]

Biophysical Journal, 2006
The fluid dynamic interaction of cavitation bubbles with adherent cells on a substrate is experimentally investigated. We find that the nonspherical collapse of bubbles near to the boundary is responsible for cell detachment. High-speed photography reveals that a wall bounded flow leads to the detachment of cells. Cells at the edge of the circular area
Ohl, C.D., Arora, M., Ikink, Roy, de Jong, N., Versluis, Michel, Delius, Michael, Lohse, Detlef   +6 more
openaire   +4 more sources

Sonoluminescence and sonochemiluminescence from a microreactor [PDF]

, 2012
Micromachined pits on a substrate can be used to nucleate and stabilize microbubbles in a liquid exposed to an ultrasonic field. Under suitable conditions, the collapse of these bubbles can result in light emission (sonoluminescence, SL).
Apfel, Ashokkumar, Ashokkumar, Ashokkumar, Borkent, Bremond, Bremond, Brenner, Brenner, Brotchie, Cabeza, Chen, Cobley, Cravotto, Crum, Crum, David Fernandez Rivas, Detlef Lohse, Dezhkunov, Didenko, Dijkink, Fernandez Rivas, Flint, Fowlkes, Frenzel, Guan, Han J.G.E. Gardeniers, Hatanaka, Hilgenfeldt, Iida, Jarman, Kyuichi Yasui, Labouret, Lauterborn, Lauterborn, Lee, Lee, Lohse, Luther, Marinesco, Marmottant, Matula, McNamara, Muthupandian Ashokkumar, Negishi, Ohl, Price, Sadighi-Bonabi, Sandra Kentish, Sunartio, Suslick, Suslick, Tandiono, Thomas Leong, Toegel, Toegel, Toru Tuziuti, Tsochatzidis, Tuziuti, Yasui, Yasui, Yasui, Yasui, Zeravcic   +63 more
core   +9 more sources

Enhancement of oscillation amplitude of cavitation bubble due to acoustic wake effect in multibubble environment

Ultrasonics Sonochemistry, 2021
Acoustic cavitation occurs in ultrasonic treatment causing various phenomena such as chemical synthesis, chemical decomposition, and emulsification. Nonlinear oscillations of cavitation bubbles are assumed to be responsible for these phenomena, and the ...
Takuya Yamamoto, Sergey V. Komarov
doaj   +1 more source

Sterilization of Biofilm in Foam Using a Single Cavitation Bubble [PDF]

MATEC Web of Conferences, 2020
This article presents the sterilization of bacteria using cavitation bubbles. Cavitation generated by ultrasound creates a cavitation cloud. Therefore is more advantageous to generate the cavitation bubbles by laser-induced breakdown, because it is ...
Schovanec Petr, Jasikova Darina, Kotek Michal, Havlicek Karel, Nechanicka Magda, Eichler Jakub, Cech Jiri, Subrtova Petra   +7 more
doaj   +1 more source

A bubble fission model for collapsing cavitation bubbles

Physics of Fluids, 2004
A bubble fission model that takes into account energy dissipation during violent collapses of cavitation bubbles is introduced by assuming volume conservation and continuity of the gas pressure during instantaneous breakup, invoking either Rayleigh–Taylor instability or high speed microjet formation.
Delale, CF, Tunc, M
openaire   +3 more sources