Numerical simulation of steady-state and transient natural convection in an isothermal open cubic cavity

J. F. Hinojosa, J. Cervantes De Gortari

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Abstract

In this work the numeric results, of the steadystate and transient heat transfer by natural convection in a horizontal isothermal open cubic cavity are presented. The most important assumptions in the mathematical formulation are two, the flow is laminar and the Boussinesq approximation is valid. The conservation equations in primitive variables are solved using the finite volume method and the SIMPLEC algorithm. The advective terms are approximated by the SMART scheme and the diffusive terms are approximated using the central differencing scheme. The results are obtained for a Rayleigh number range from 104 to 107.The numerical model predicted flow instabilities and Nusselt number oscillations for high Rayleigh numbers.

Original languageEnglish
Pages (from-to)595-606
Number of pages12
JournalHeat and Mass Transfer/Waerme- und Stoffuebertragung
Volume46
Issue number6
DOIs
StatePublished - Jun 2010

Bibliographical note

Funding Information:
The first author acknowledges the support of the National University of Mexico (UNAM), through a postdoctoral fellowship program granted by DGAPA.

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