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Numerical research of double‐diffusive natural convection in elliptical cylinders: Effect of thermal Rayleigh number
Author(s) -
Taloub Djedid,
Bouras Abdelkarim,
Djezzar Mahfoud,
Driss Zied
Publication year - 2020
Publication title -
heat transfer
Language(s) - English
Resource type - Journals
eISSN - 2688-4542
pISSN - 2688-4534
DOI - 10.1002/htj.21715
Subject(s) - annulus (botany) , natural convection , mechanics , rayleigh number , finite volume method , convection , rayleigh scattering , thermal , newtonian fluid , heat transfer , materials science , physics , geometry , classical mechanics , mathematics , thermodynamics , optics , composite material
This paper is the first part of a two‐part study, and it presented numerical research of double‐diffusive natural convection within an annulus area, situated in two horizontal confocal elliptic solids charged by a Newtonian fluid. The elliptical coordinates were used to transform the physical domain into a rectangular one. To resolve the governing equations and the boundary layer conditions, a calculator code based on the finite volume approach was developed. The details of the influences of thermal Rayleigh number on heat and mass transfer were investigated. Results obtained were compared with those existing in other reasearch works.