Numerical Study Of Laminar Natural Convection Of Air In An Annulus Allowing For Variable Fluid Properties
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F Shahraki & R Bragg
In this paper the effects of variable thermo-physical properties of the fluid on laminar natural convection heat transfer and fluid flow were determined using a penalty finite element method for an annulus between two concentric cylinders problem with radius ratio 2.6 (Rout/Rin=2.6), considering both constant and variable fluid properties. The penalty finite element method was used for Rayleigh numbers ranging from 103 to 105 and Pro= 0.71. The formulation was based on primitive variables.