Double Diffusive Convective Flow Study of a Hybrid Nanofluid in an Inverted T-shaped Porous Enclosure Under the Influence of Soret and Dufour Prameters

Abstract

This numerical investigation is dedicated to explore the impact of Soret and Dufour parameters in the double-diffusive convective flow of a hybrid nanofluid in an inverted T-shaped porous enclosure. The thermophysical properties and the numerical values of the hybrid nanofluid are adopted from the experimentally published data. The mathematical model is formulated based on the generalized equation of the Darcy-Brinkmann-Forchheimer model, which is further numerically simulated with the penalty finite element method. As a parametric study, broad values of parameters are considered, including the Rayleigh number, Darcy number, porosity value, buoyancy ratio, Lewis number, Soret, and Dufour parameter. The fluid flow, heat, and mass transfer in the physical domain have been characterized through the results of streamlines, isotherms, and isoconcentration plots, respectively. Additionally, quantitative numerical results for heat and mass transfer rate at the heated(concentrated) wall are expressed through the mean Nusselt and mean Sherwood number at various combinations of flow parameters. The comprehensive study of the present mathematical model reveals that the flow characteristics are directly influenced by the Rayleigh number, Darcy number, porosity value, Lewis numbers, and buoyancy ratio. Moreover, a combined impact of Soret and Dufour parameters is observed in the heat and mass transfer rate.