Three-Dimensional Mixed Convection Heat and Mass Transfer in a Rectangular Duct: Case of Longitudinal Rolls

This article presents numerical study of 3-D thermosolutale mixed convection (TSMC) in horizontal rectangular channels. The contribution of this work is to characterize the travelling wave's appearance and to generalize the behavior of Poiseuille-Rayleigh-Benard (PRB) systems for a broad range...

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Bibliographic Details
Published inNumerical heat transfer. Part A, Applications Vol. 59; no. 5; pp. 349 - 371
Main Authors Rahli, O., Bennacer, R., Bouhadef, K., Ameziani, D. E.
Format Journal Article
LanguageEnglish
Published Philadelphia Taylor & Francis Group 18.02.2011
Taylor & Francis Ltd
Subjects
3-D technology
Channels
Control systems
Convection
Diffusion
Heat transfer
Mass transfer
Mathematical models
Reynolds number
Rolls
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Summary:This article presents numerical study of 3-D thermosolutale mixed convection (TSMC) in horizontal rectangular channels. The contribution of this work is to characterize the travelling wave's appearance and to generalize the behavior of Poiseuille-Rayleigh-Benard (PRB) systems for a broad range of dimensionless parameters, which control the double diffusive mixed convection. The numerical results consist of analyzing the flow regimes of the steady longitudinal thermoconvectives rolls for the case of purely thermal mixed convection (TMC) and for both thermal and mass transfer (TSMC). The transition from opposed volume forces to cooperating ones at fixed Rayleigh (Ra), Reynolds (Re), and Lewis (Le) numbers, considerably affects the birth and the development of the longitudinal rolls (noted R // ). The heat and mass transfers distribution, presented by the average Nusselt and Sherwood numbers, are also examined.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1040-7782
1521-0634
DOI:10.1080/10407782.2011.549081