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Heat and mass transfer analysis of combined convection in a horizontal rectangle
Author(s) -
Ambethkar Vusala,
Basumatary Lakshmi R.
Publication year - 2021
Publication title -
heat transfer
Language(s) - English
Resource type - Journals
eISSN - 2688-4542
pISSN - 2688-4534
DOI - 10.1002/htj.22140
Subject(s) - prandtl number , reynolds number , rayleigh number , schmidt number , mechanics , thermodynamics , dimensionless quantity , forced convection , rectangle , richardson number , combined forced and natural convection , heat transfer , mathematics , mass transfer , natural convection , physics , geometry , turbulence
In this study, the heat and mass transfer of combined free and forced convection in the horizontal rectangle is explored. The governing equations together with the boundary conditions are solved numerically by using the finite volume method. The innovative idea in this study is to appropriately modify the Semi‐Implicit Method for Pressure‐Linked Equations algorithm and thereby, the numerical solutions of the flow variables such as the temperature and the concentration in addition to the components of velocity and the pressure are computed. The Richardson numbers ( Ri ) for distinct gases and liquids are calculated for different Rayleigh numbers at low ( Re = 50) and high ( Re = 5000) Reynolds numbers. The dimensionless parameters, such as the Reynolds number ( Re ), the Prandtl number ( Pr ), and the Schmidt number ( Sc ) are appropriately chosen to calculate the Richardson numbers. Consequently, combined free and forced convection effects are analyzed. Furthermore, the heat and mass transfer aspect for distinct gases and liquids is critically examined using empirical correlations. The accuracy and the validation of these results are ensured owing to the solutions obtained from correlations being advised in this study and those are existing in the literature.