图书馆订阅: Guest
Begell Digital Portal Begell 数字图书馆 电子图书 期刊 参考文献及会议录 研究收集
雾化与喷雾
影响因子: 1.262 5年影响因子: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 1.6

ISSN 打印: 1044-5110
ISSN 在线: 1936-2684

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

雾化与喷雾

DOI: 10.1615/AtomizSpr.v20.i3.20
pages 191-209

A PARAMETRIC NUMERICAL STUDY OF THE HEAD-ON COLLISION BEHAVIOR OF DROPLETS

George Strotos
Technological Education Institute of Piraeus, Mechanical Engineering Department, Fluid Mechanics Laboratory, 250 Thivon & P. Ralli str., Aegaleo, 12244, Greece
Nikos Nikolopoulos
Centre Of Research Technology Hellas / Institute of Solid Fuels and Technology Applications
Konstantinos-Stephen P. Nikas
Technological Education Institute of Piraeus, Mechanical Engineering Department, Fluid Mechanics Laboratory, Greece

ABSTRACT

Head-on collision of droplets consisting of different liquids for a wide range of Weber numbers between 25 and 430 is studied numerically using the volume of fluid (VOF) methodology and by adopting an axisymmetric approximation. An adaptive local grid refinement technique is used to capture with precision the liquid-air interface at significantly reduced computational cost relative to a uniformly dense grid. The conditions setting the boundary between permanent coalescence and reflexive separation are defined; in addition, useful relationships determining the ligament’s elongation, the corresponding time of its breakup, the number of satellite droplets formed, the maximum droplet deformation, and the viscous dissipation coefficient are presented. Furthermore, the present study reveals the dependence of collision characteristics not only on Weber number, but also either on Reynolds, capillary, or Ohnesorge numbers.


Articles with similar content:

SHELL FORMATION IN DRY SPINNING
ICHMT DIGITAL LIBRARY ONLINE, Vol.0, 2012, issue
Juan I. Ramos
CHARACTERISTICS OF SURFACEWAVES IN PLANAR LIQUID STREAMS COLLIDING WITH NONUNIFORM VELOCITY PROFILES
Atomization and Sprays, Vol.29, 2019, issue 3
Ming-Xi Tong, Qing-Fei Fu, Li-Jun Yang, Fei Zhao
DETECTION OF LIQUID-VAPOUR INTERFACE IN MOLECULAR DYNAMICS SIMULATION
International Heat Transfer Conference 16, Vol.19, 2018, issue
Qiang Sheng, Hua Sheng Wang, Jie Sun, Wen Wang, Xinyu You
SHAPE IDENTIFICATION OF FROST FORMATION AROUNDA REFRIGERATION TUBE VIA THE INVERSE HEAT CONDUCTION APPROACH
Computational Thermal Sciences: An International Journal, Vol.3, 2011, issue 5
M. Mirzaei, Hamid Fazeli
EFFECT OF NOZZLE GEOMETRY ON THE ATOMIZATION AND SPRAY CHARACTERISTICS OF GELLED-PROPELLANT SIMULANTS FORMED BY TWO IMPINGING JETS
Atomization and Sprays, Vol.20, 2010, issue 12
Jong Guen Lee, Syed Fakhri, Richard A. Yetter