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Numerical analysis on longitudinal location optimization of vortex generator in compact heat exchangers
Author(s) -
Gorji M.,
Mirgolbabaei H.,
Barari A.,
Domairry G.,
Nadim N.
Publication year - 2011
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/fld.2278
Subject(s) - nusselt number , vortex generator , mechanics , reynolds number , pressure drop , turbulence , curvilinear coordinates , heat transfer , vortex , vorticity , physics , mathematics , materials science , geometry
In this paper, numerical, curvilinear and turbulent model has been used to investigate the effect of vortex generator's longitudinal displacement on heat transfer and fluid flow in different Reynolds numbers ranging from 500 to 3000. The numerical model has been validated with experimental results of a former study, which is resembled in a particular case. Numerical simulation shows that the vorticity enhancement would increase both Nusselt number and pressure drop. Proposed trend is not constant and the pattern in which parameters change is dependent on Reynolds number. Finally, a conjugated optimization of pressure drop and the Nusselt number has been suggested based on the order of parameter changes. Copyright © 2010 John Wiley & Sons, Ltd.