MHD Forced Convective flow of Non-Newtonian fluid through Stumpy Permeable Porous medium

In this paper, we have investigated the simulation on the magnetohydrodynamic (MHD) forced convective flow through stumpy permeable porous medium (oil sands, sand) using Lattice Boltzmann method. Simulation is carried out for non-Newtonian fluids, both shear-thinning and shear thickening, by varying the power law index from 0.5 to 1.5 in the Carreau-Yasuda model, which is used to represent non-Newtonian fluids. Parameters involved in Lattice Boltzmann method and Carreau model are identified appropriately to achieve numerical convergence. Permeability and porosity are varied in the range of 10(-10) to 10(-6) and 0.1 to 0.7, respectively, to match actual geometrical properties of low permeable porous media such as sandstone and sand. Numerical technology is validated by establishing Darcy's law by plotting the graph between velocity and pressure gradient. Consequently, the investigation is carried out to study the influence of material properties of porous medium on flow properties such as velocity, temperature profiles and Nusselt number. (c) 2017 Elsevier Ltd. All rights reserved.