Sinusoidal Heating of Thin Plates in a Hybrid Nanofluid-Filled Ventilated Porous Container with Thermal Radiation

Heat transport in a porous, ventilated enclosure saturated with a hybrid nanofluid, with radiation and sinusoidal heating as additional variables, is the subject of the current investigation. Silver and magnesium oxide nanoparticles suspended in water make up the hybrid nanofluid that is operational in the research. Two baffles, arranged vertically and centered in the porous container, provide sinusoidal heating. By studying the effects of radiation on the unique characteristics of the hybrid nanofluid and porous medium, as well as the presence of sinusoidally heated obstacles, this study aims to deduce how these factors affect the cavity’s heat transmission and flow patterns. We solve the discretized governing equations and the boundary conditions using the finite difference method. A different characteristics, including phase deviation, amplitude ratio, heat radiation, Darcy number, and solid volume fraction, are considered in relation to the numerical results. As the amplitude ratio or phase deviation increases in a thermal radiation environment, the average Nusselt number is observed to fall in value.The average Nusselt number increases by 96.55 % and 37.03 % as R increases from 0 to 3 and from 3 to 6, respectively, at a phase deviation of 0, whereas the corresponding increases at a phase deviation of π are 19.56 % and 11.47 %, respectively. Convective transfer is amplified in a hybrid nanofluid saturated porous medium when the radiation is greater. The increase in the amplitude ratio from 0 to 1 results in a reduction in the average Nusselt number of 80.32% for the pure fluid and 44.59% for the hybrid nanofluid. The results of this study have important implications for several engineering branches, including heat exchangers,and energy systems.