Inscrição na biblioteca: Guest
Portal Digital Begell Biblioteca digital da Begell eBooks Diários Referências e Anais Coleções de pesquisa
Atomization and Sprays
Fator do impacto: 1.262 FI de cinco anos: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 1.6

ISSN Imprimir: 1044-5110
ISSN On-line: 1936-2684

Volumes:
Volume 29, 2019 Volume 28, 2018 Volume 27, 2017 Volume 26, 2016 Volume 25, 2015 Volume 24, 2014 Volume 23, 2013 Volume 22, 2012 Volume 21, 2011 Volume 20, 2010 Volume 19, 2009 Volume 18, 2008 Volume 17, 2007 Volume 16, 2006 Volume 15, 2005 Volume 14, 2004 Volume 13, 2003 Volume 12, 2002 Volume 11, 2001 Volume 10, 2000 Volume 9, 1999 Volume 8, 1998 Volume 7, 1997 Volume 6, 1996 Volume 5, 1995 Volume 4, 1994 Volume 3, 1993 Volume 2, 1992 Volume 1, 1991

Atomization and Sprays

DOI: 10.1615/AtomizSpr.2013007430
pages 249-264

EFFECT OF IMPACTING DISTANCE AND CONFINING PRESSURE ON CAVITATION BUBBLE COLLAPSE CHARACTERISTICS

Hualin Liao
China University of Petroleum
Riji Chen
PetroChina International Iraq FZE, Dubai 2993, UAE
Lei Wang
Petroleum Engineering Department, Colorado School of Mines, Golden, CO 80401, USA
Lihong Zhu
College of Petroleum Engineering, China University of Petroleum, Qingdao, Shandong 266580, China

RESUMO

For the purpose of understanding the effects of standoff distance and confining pressure on erosion characteristics of a cavitation jet, the collapsing process of a cavitation bubble was simulated with the volume-of-fluid (VOF) model. In the numerical simulation, the effect of initial distance between the cavitation bubble and the impact surface and the magnitude of confining pressure was analyzed on bubble collapse shape, collapse time, pressure impulse, and velocity of a micro-jet. The results reveal that the numerical calculation agrees well with experiments for the detailed collapse process of a bubble; the VOF model can accurately calculate the pressure impulse and the micro-jet's velocity, which are hard to measure in experiments. It is also thought that the cavitation erosion of cavitating jets on an impact target is mainly due to high-pressure impulse rather than the micro-jets formed during bubble collapse, because of the magnitude of the former being far more than the latter. The magnitude of the pressure impulse and velocity of micro-jets is closely related to the initial distance and confining pressure, which influence erosion characteristics of a cavitation jet.


Articles with similar content:

CHARACTERISTICS OF HOLLOW CONE SPRAYS IN CROSSFLOW
Atomization and Sprays, Vol.21, 2011, issue 4
Mario F. Trujillo, Jian Gao, Suraj Deshpande
EXPERIMENTAL STUDY ON THE EFFECTS OF HYDRAULIC CONFINING PRESSURE ON IMPACTING CHARACTERISTICS OF JETS
Atomization and Sprays, Vol.22, 2012, issue 3
Can Yi, Jilei Niu, Hualin Liao, Gensheng Li
AN INVESTIGATION ON THE BREAKUP OF UNDERWATER BUOYANT OIL JETS: COMPUTATIONAL SIMULATIONS AND EXPERIMENTS
Atomization and Sprays, Vol.23, 2013, issue 11
Leandre R. Berard, Stephen R. Codyer, Mehdi Raessi, Michael T. Bauer, Peter Friedman
EXPERIMENTAL STUDY ON SPRAY CHARACTERISTICS OF EMULSIFIED DIESEL BLENDING WITH WATER IN A CONSTANT VOLUME CHAMBER
Atomization and Sprays, Vol.26, 2016, issue 6
Jie Tang, Sheng Huang, Zhaowen Wang, David Vuilleumier, Xiong Chen
AVERAGE DROPLET DIAMETER SPATIAL DISTRIBUTION IN A SPRAY AFTER GAS-ASSISTED PREMIXED ATOMIZATION
Atomization and Sprays, Vol.21, 2011, issue 8
Konstantin Pougatch, J. McMillan, Martha Eva Salcudean