International Symposium on Advances in Computational Heat Transfer 2008
DOI: 10.1615/ichmt.2008.cht.2410
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Refined Eddy Viscosity Schemes and Large Eddy Simulations for Ascending Mixed Convection Flows

Abstract: The present work is concerned with the modelling of ascending turbulent ('mixed convection') flow in a vertical heated pipe. All fluid properties are assumed to be constant and buoyancy is accounted for within the Boussinesq approximation. Four Eddy Viscosity Models (EVMs) are examined against experimental and numerical (direct simulation) data. The EVMs embody distinct physical refinements with respect to the parent high-Reynolds-number k-ε model. New Large Eddy Simulations (LES) are also presented. Three dif… Show more

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Cited by 11 publications
(9 citation statements)
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“…A more complete assessment of a turbulence model requires an examination of mean flow and turbulence profiles and this will be done in a companion work [22]. …”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…A more complete assessment of a turbulence model requires an examination of mean flow and turbulence profiles and this will be done in a companion work [22]. …”
Section: Discussionmentioning
confidence: 99%
“…More detailed descriptions of the three turbulence models may be found in the original papers and Keshmiri et al [22].…”
Section: Refined Eddy-viscosity Models Implemented Inmentioning
confidence: 99%
“…The commercial code 'STAR-CD' [11] is used to generate results using the low-Reynoldsnumber k-ε model of Lien, Chen and Leschziner [12] ('LRN k-ε model', below), the k-ω-SST model of Menter [13] ('LRN k-ω-SST model'), and a variant of Durbin's v 2 -f model due to Iaccarino [14] ('v 2 -f model'). In earlier works by the authors and their colleagues, the turbulence models in STAR-CD have been validated against in-house and industrial codes with the same turbulence models [15,16]. All fluid properties are assumed to be constant.…”
Section: Numerical Proceduresmentioning
confidence: 99%
“…In the present study, two turbulence models of the Eddy-Viscosity type are employed. (A number of models of this general class have been used by the author and his colleagues in the computation of smooth surface buoyancy-affected, or 'mixed convection' flows [2][3][4] …”
Section: Introductionmentioning
confidence: 99%