Recueil de mécanique
Volume 3, Numéro 2, Pages 306-312
2019-03-02
Thermo-convective Structure Of A Non-newtonian Fluid At Different Rayleigh Numbers And Temperature Gradients In A Confined Cavity
Authors : Benzenine Hamidou .
Abstract
The study of heat transfer by natural convection in a rectangular cavity saturated by a fluid is considered. The two vertical walls are heated and cooled and the other two walls are considered adiabatic. A numerical study of this phenomenon was conducted, by solving the complete system of governing equations by a fluent computer code and using the Boussinesq approximation. In order to verify the validity of our results, a numerical confirmation with references is thus obtained. The variation of the dynamic and thermo-convective structures of an airflow was analyzed for an aspect ratio configuration equal to one and for different number of Rayleigh and temperature gradients. The study also confirmed the proportionality of mean Nusselt number and mean heat flux with temperature gradient and Rayleigh number.
Keywords
Natural convection ; Cavity ; Numerical simulation ; CFD
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