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.2013007388
pages 505-523

APPLICATION OF POPULATION BALANCE MODEL TO COMBINED ATOMIZATION AND EVAPORATION PROCESSES IN DENSE SPRAYS

Narayana P. Rayapati
Department of Mechanical Engineering, Tennessee Tech University, Cookeville, Tennessee 38505, USA
Mahesh V. Panchagnula
Department of Applied Mechanics, Indian Institute of Technology Madras, Chennai 600036, India
John Peddieson
Department of Mechanical Engineering, Tennessee Technological University, Cookeville, Tennessee, U.S.A.

RESUMO

Droplet atomization and evaporation in dense sprays is relevant to several physical applications. We report a population balance model wherein these processes are handled simultaneously. The model is implemented in an Eulerian-Eulerian multiphase framework wherein the drop phase is itself modeled as multiple continua. The continuum model of the drop phase allows us to incorporate a stress field which naturally arises in a collision dominated dense spray. The utility of the model is first demonstrated on a uniform flow evaporator, wherein the mean droplet surface area is shown to exhibit a similarity scaling in terms of a nondimensional parameter that characterizes the competition between atomization and evaporation. The model is then generalized to a computational fluid dynamics (CFD) situation wherein a plug flow atomizer/evaporator is studied. The continuous variation of Sauter mean diameter (SMD) in the flow is presented wherein atomization processes cause the SMD to decrease while evaporation processes cause the SMD to locally increase. This is due to the preferential disappearance of the smaller size drops. Finally, the utility of the model for studying dense droplet ensemble atomization, evaporation, and combustion is discussed.


Articles with similar content:

SPRAY PROCESS MODELING IN METAL MATRIX COMPOSITE POWDER PRODUCTION
Atomization and Sprays, Vol.21, 2011, issue 11
V. Uhlenwinkel, Udo Fritsching, Lydia Achelis, L. Heisteruber, Xinggang Li
EULER/LAGRANGE CALCULATIONS OF TURBULENT SPRAYS: THE EFFECT OF DROPLET COLLISIONS AND COALESCENCE
Atomization and Sprays, Vol.10, 2000, issue 1
S. Hohmann, M. Ruger, Martin Sommerfeld, Gangolf Kohnen
AN APPROACH TO MODELING FLASH-BOILING FUEL SPRAYS FOR DIRECT-INJECTION SPARK-IGNITION ENGINES
Atomization and Sprays, Vol.26, 2016, issue 12
Pavlos Aleiferis, Arash Hamzehloo, Christopher Price, David Richardson
MODELING SUBGRID-SCALE MIXING OF VAPOR IN DIESEL SPRAYS USING JET THEORY
Atomization and Sprays, Vol.20, 2010, issue 1
Rolf D. Reitz, Neerav Abani
A STOCHASTIC INVERSE PROBLEM FOR MULTISCALE MODELS
International Journal for Multiscale Computational Engineering, Vol.15, 2017, issue 3
N. Panda, Lindley Graham, Clint Dawson, Troy Butler, Donald Estep