Influence of Lorentz forces on nanofluid flow in a porous cavity by means of non-Darcy model. Issue 8 (6th November 2017)

• Record Type: Journal Article
• Authors: Sheikholeslami, M.
• Is Part Of: Engineering computations. Volume 34:Issue 8(2017)
• Page Start: 2651
• Page End: 2667
• Publication Date: 2017-11-06
• Subjects: Nanofluid -- Natural convection -- Magnetohydrodynamic -- Non-Darcy model; Computer-aided engineering -- Periodicals; Computer graphics -- Periodicals; 620.00285
• DOI: 10.1108/EC-01-2017-0008
• Languages: English
• ISSNs: 0264-4401

Abstract

Abstract : Purpose: This main purpose of this paper is to investigate the influence of Lorentz forces on magnetic nanofluid free convection in a porous media. Control volume based finite element method (CVFEM) is chosen to simulate the purpose of this paper. Influences of Darcy number, Fe3 O4 –water volume fraction, Hartmann and Rayleigh numbers on hydrothermal behavior are presented. Design/methodology/approach: Magnetic nanofluid flow in a permeable medium is studied numerically using the non-Darcy model. Outputs are obtained by means of CVFEM. Findings: Results indicated that isotherms become denser near the inner cylinder with augmentation of the permeability of the porous media. The Nusselt number enhances with an increase in buoyancy forces, Darcy number but it detracts with augment of Lorentz forces. Originality/value: Results depict that the effect of the Hartmann number on rate of heat transfer is more observable in a medium with higher permeability.