Two dimensional time dependent simulation of the subcritical flow in a staggered tube bundle using a subgrid scale model

Bouris, D; Bergeles, G

dc.contributor.author	Bouris, D	en
dc.contributor.author	Bergeles, G	en
dc.date.accessioned	2014-03-01T01:15:21Z
dc.date.available	2014-03-01T01:15:21Z
dc.date.issued	1999	en
dc.identifier.issn	0142-727X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13454
dc.subject	Subcritical flow	en
dc.subject	Subgrid scale model	en
dc.subject	Time dependent simulation	en
dc.subject	Tube bundles	en
dc.subject.classification	Thermodynamics	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.classification	Mechanics	en
dc.subject.other	pipe	en
dc.subject.other	subcritical flow	en
dc.subject.other	tube array	en
dc.subject.other	turbulence	en
dc.title	Two dimensional time dependent simulation of the subcritical flow in a staggered tube bundle using a subgrid scale model	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0142-727X(98)10053-X	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0142-727X(98)10053-X	en
heal.language	English	en
heal.publicationDate	1999	en
heal.abstract	Numerical calculation of subcritical flow in tube bundles is a difficult task since transitional effects as well as vortex shedding are important characteristics of the flow field. In the present paper a time dependent simulation using a subgrid scale model is performed in two dimensions for the subcritical flow through a staggered tube bundle. Previous time dependent simulations of the same flow using the k-epsilon turbulence model unfortunately lead to a steady state solution, which underpredicted turbulence quantities and recirculation lengths. Thus a novel approach is introduced, using a subgrid scale model for the calculation of the eddy viscosity. The methodology that is used strongly resembles a large eddy simulation even though it is performed in two dimensional space. A filtering procedure is used to remove the vortex shedding frequency from the velocity data thus allowing a calculation of the turbulence fluctuations. Calculated vortex shedding frequencies, periodic and turbulence velocity fluctuations and integral time scales are in good agreement with experimental measurements. (C) 1999 Elsevier Science Inc. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE INC	en
heal.journalName	International Journal of Heat and Fluid Flow	en
dc.identifier.doi	10.1016/S0142-727X(98)10053-X	en
dc.identifier.isi	ISI:000079003100002	en
dc.identifier.volume	20	en
dc.identifier.issue	2	en
dc.identifier.spage	105	en
dc.identifier.epage	114	en