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Numerical Modelling of Rib Width and Surface Radiation Effect on Natural Convection in a Vertical Vented and Divided Channel

Abstract : Natural convection with surface radiation heat transfer is investigated numerically in a vented vertical channel heated asymmetrically. The numerical solution is obtained using a finite volume method based on the SIMPLER algorithm for the treatment of velocity-pressure coupling. Concerning the radiation exchange, in particular, the working fluid is assumed to be transparent, so that only the solid surfaces (assumed diffuse-grey) give a contribute to such exchange. The effect of Rayleigh numbers and rib width (for Pr=0.7 air fluid) on the heat transfer and flow structure in the channel is examined in detail. Results are presented in terms of isotherms, streamlines, and average Nusselt number.
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Submitted on : Wednesday, February 22, 2017 - 11:16:35 AM
Last modification on : Tuesday, November 19, 2019 - 9:46:59 AM

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  • HAL Id : hal-01473809, version 1

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Nadia Dihmani, Samir Amraqui, Ahmed Mezrhab, Najib Laraqi. Numerical Modelling of Rib Width and Surface Radiation Effect on Natural Convection in a Vertical Vented and Divided Channel. Fluid Dynamics and Material Processes, 2012, pp.311-322. ⟨hal-01473809⟩

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