Effect of rotation on dusty couple-stress fluid with hydromagnetic field heated below through porous medium

Abstract

Purpose The purpose of this paper is used to study the combined effect of solute gradient and magnetic field on dusty couple-stress fluid in the presence of rotation through a porous medium. Design/methodology/approach The perturbation technique (experimental method) is applied in this study. Findings For the case of stationary convection, solute gradient and rotation have stabilizing effect, whereas destabilizing effect is found in dust particles in the system. Couple stress and medium permeability both have dual character to its stabilizing effect in the absence of magnetic field and rotation. Magnetic field succeeded in establishing a stabilizing effect in the absence of rotation. Originality/value The results are discussed by allowing one variable to vary and keeping other variables constant, as well as by drawing graphs.

An analysis of hall currents on couple stress fluid heated from below with magnetic field

“…Stanly and Vasanthakumari (2017) have discussed the thermal instability of incompressible dusty couple-stress fluid with magnetic field and rotation and found that rotation has a stabilizing effect while dust particles have a destabilizing effect on the system. Stanly and Vasanthakumari (2018a, 2018b) have studied dusty couple-stress fluid heated and soluted from below in a porous medium and found that suspended particles have a destabilizing effect on the system. Stanly and Vasanthakumari (2018a, 2018b) have analyzed the dusty couple Stress fluid heated from below in the presence of horizontal magnetic field with hall currents and found that suspended particles have a destabilizing effect on the system.…”

“…Stanly and Vasanthakumari (2018a, 2018b) have studied dusty couple-stress fluid heated and soluted from below in a porous medium and found that suspended particles have a destabilizing effect on the system. Stanly and Vasanthakumari (2018a, 2018b) have analyzed the dusty couple Stress fluid heated from below in the presence of horizontal magnetic field with hall currents and found that suspended particles have a destabilizing effect on the system.…”

Effect of Suspended Particles on a Couple-Stress Rivlin-Ericksen Ferromagnetic Fluid Heated from Below in a Porous Medium, with Varying Gravity and Magnetic Field.

“…Thermal convection in a couple stress fluid on applying horizontal magnetic field and Hall currents has been studied by (Jaimala vishnoi and vikrant jawla, 2013) and found magnetic field has stabilizing effect whereas Hall currents are found to have destabilizing effect on the system. A dusty couple-stress fluid in presence of rotation and magnetic field has been studied (Stanly and Vasanthakumari, 2017) and noted the effects on thermal instability of the system.…”