Numerical study of MHD two-phase Couette flow analysis for fluid-particle suspension between moving parallel plates

In this paper, the unsteady magnetohydrodynamic (MHD) Couette flow of two non-Newtonian immiscible fluids micropolar and micropolar dusty (fluid-particle suspension) are considered in the horizontal channel with heat transfer. A comprehensive mathematical model and computational simulation with the modified cubic B-Spline-Differential Quadrature method (MCB-DQM) is described for unsteady flow. The coupled partial differential equation for fluid and particle-phase are formulated and the effect of viscous dissipation, Joule heating, Hall current, and other hydrodynamic and solutal parameters i. e. Reynolds number, Eckert number, particle concentration parameter, Eringen micropolar material parameter, time, viscosity ratio, and density ratio on the flow rate, micro rotation, and temperature characteristics were investigated. The analysis of obtained results reveals that the fluids and particle velocities are slightly decreasing with Hartmann number, and increasing with time, ion-slip, and Hall parameters. Microrotation declined with Microrotations dropped significantly with ion-slip and Hall parameter and grown Hartman number. The temperature begins to rise as time, Hartman number, and Eckert number grow and declined with Ion-slip and Hall parameter.

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Numerical study of concentrated fluid-particle suspension flow in a wavy channel

International Journal for Numerical Methods in Fluids ◽

10.1002/fld.1858 ◽

2009 ◽

Vol 59 (10) ◽

pp. 1125-1155 ◽

Cited By ~ 4

Author(s):

S. Mukhopadhyay ◽

R. Usha ◽

E. G. Tulapurkara

Keyword(s):

Numerical Study ◽

Fluid Particle ◽

Suspension Flow ◽

Particle Suspension ◽

Wavy Channel ◽

Fluid Particle Suspension

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Numerical study of unsteady MHD Couette flow and heat transfer of nanofluids in a rotating system with convective cooling

International Journal of Numerical Methods for Heat &amp Fluid Flow ◽

10.1108/hff-10-2014-0316 ◽

2016 ◽

Vol 26 (5) ◽

pp. 1567-1579 ◽

Cited By ~ 14

Author(s):

Ahmada Omar Ali ◽

Oluwole Daniel Makinde ◽

Yaw Nkansah-Gyekye

Keyword(s):

Magnetic Field ◽

Heat Transfer ◽

Couette Flow ◽

Numerical Study ◽

Integration Scheme ◽

Parallel Plates ◽

Content Type ◽

Flow And Heat Transfer ◽

Mhd Couette Flow ◽

Rotating Channel

Purpose – The purpose of this paper is to investigate numerically the unsteady MHD Couette flow and heat transfer of viscous, incompressible and electrically conducting nanofluids between two parallel plates in a rotating channel. Design/methodology/approach – The nanofluid is set in motion by the combined action of moving upper plate, Coriolis force and the constant pressure gradient. The channel rotates in unison about an axis normal to the plates. The nonlinear governing equations for velocity and heat transfer are obtained and solved numerically using semi-discretization, shooting and collocation (bvp4c) techniques together with Runge-Kutta Fehlberg integration scheme. Findings – Results show that both magnetic field and rotation rate demonstrate significant effect on velocity and heat transfer profiles in the system with Cu-water nanofluid demonstrating the highest velocity and heat transfer efficiency. These numerical results are in excellent agreements with the results obtained by other methods. Practical implications – This paper provides a very useful source of information for researchers on the subject of hydromagnetic nanofluid flow in rotating systems. Originality/value – Couette flow of nanofluid in the presence of applied magnetic field in a rotating channel is investigated.

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