CFD Modeling of Rayleigh-benard Convection in a Closed Rectangular Enclosure Presenting a Sinusoidal

This research looks at the thermodynamic behaviour of air in a closed rectangular enclosure with a 2a amplitude sinusoid on the horizontal floor. The simulation was run in a steady state with Rayleigh numbers (7x104 Ra 7x106) with Prendtl's number Pr = 0.71. To better highlight the impact of geometry on thermodynamic behaviour, we conducted the experiment with various values of the aspect factor =2a/ with 2a and the amplitude of the sinusoid and rectangle height, respectively. We also employed the Boussinesq approximation to account for density variations in the component of gravity in the equation of motion. The isothermal lines, streamlines, and streamlines of this simulation allowed us to exhibit them the local Nusselt number's average The results demonstrated that the flow is controlled by the aspect factor, and that increasing the Rayleigh number leads to a rearrangement of the system that tends to an ordered state for a fixed value of this factor.

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