Journal ArticleDOI
Unsteady MHD Couette Flows in an Annuli: The Riemann-Sum Approximation Approach
Basant K. Jha,Clement A. Apere +1 more
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In this paper, the MHD Couette flow of a viscous incompressible electrically conducting fluid between two concentric horizontal cylinders of infinite length has been analyzed when the outer cylinder has been set into uniform accelerated motion.Abstract:
The unsteady MHD Couette flow of a viscous incompressible electrically conducting fluid between two concentric horizontal cylinders of infinite length have been analysed when the outer cylinder has been set into uniform accelerated motion. A unified closed form expressions are derived corresponding to the cases of the magnetic field fixed relative to the fluid or to the accelerated outer cylinder. The well known Laplace transform technique is applied to solve the time-dependent governing equations, while the method of Riemann-sum approximation is employed to invert the Laplace domain to the time domain in order to obtain the velocity and the skin friction. The variations of the velocity and the skin friction with respect to the Hartmann number and time have been discussed.read more
Citations
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Computational Treatment of MHD Transient Natural Convection Flow in a Vertical Channel Due to Symmetric Heating in Presence of Induced Magnetic Field
Basant K. Jha,Sani Isa +1 more
TL;DR: In this paper, the effect of induced magnetic field on transient hydromagnetic natural convection flow of an incompressible viscous electrically conducting fluid in the presence of transverse magnetic field was considered.
Journal ArticleDOI
Unsteady MHD two-phase Couette flow of fluid–particle suspension
Basant K. Jha,Clement A. Apere +1 more
TL;DR: In this paper, a two-phase unsteady MHD Couette flow between two parallel infinite plates has been studied taking the viscosity effect of the two phases into consideration, and the solution obtained is validated by assenting comparisons with the closed form solutions obtained for the steady states which have been derived separately and also by the implicit finite difference method.
Journal ArticleDOI
Theoretical analysis of transient natural convection flow in a vertical microchannel with electrokinetic effect
Michael O. Oni,Basant K. Jha +1 more
TL;DR: In this paper, a theoretical analysis is carried out to understand the role of electrokinetic effect on transient natural convection flow in a vertical microchannel, by incorporating the electro kinematic effect.
Journal ArticleDOI
Transient magnetohydrodynamic free convective flow in vertical micro-concentric annuli
TL;DR: In this paper, the transient magnetohydrodynamic free convective flow in vertical micro-concentric annuli was analyzed in the presence of velocity slip and temperature jump at the outer surface of the inner cylinder and the inner surface of outer cylinder.
Journal ArticleDOI
Transient natural convection flow between vertical concentric cylinders heated/cooled asymmetrically:
Basant K. Jha,Michael O. Oni +1 more
TL;DR: In this paper, the authors investigated the impact of asymmetric heating or cooling of cylinder surfaces on transient natural convection flow in between vertical concentric cylinders and found that the outer surface of inner cylinders is more convective than the inner surface of cylinders.
References
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Journal ArticleDOI
Flow Formation in Couette Motion in Magnetohydrodynamics
TL;DR: In this paper, the flow formation in Couette motion of an electrically conducting, viscous and incompressible fluid in a transverse magnetic field is studied. But the analysis is limited to the case of small magnetic Reynolds number.
Journal ArticleDOI
Transient effects on magnetohydrodynamic Couette flow with rotation : accelerated motion
TL;DR: In this paper, the transient features of the Couette flow of an electrically conducting fluid subject to rotation and magnetic field have been analyzed when one of the plates has been set into uniformly accelerated motion.
Journal ArticleDOI
Unsteady MHD Couette flow in a rotating system
TL;DR: The unsteady hydromagnetic Couette flow of a viscous incompressible electrically conducting fluid in a rotating system has been considered and an exact solution of the governing equations has been obtained by using a Laplace transform.
Journal ArticleDOI
Natural convection in vertical concentric annuli under a radial magnetic field
TL;DR: In this paper, an exact solution for fully developed natural convection in open-ended vertical concentric annuli under a radial magnetic field is presented, where expressions for velocity field, temperature field, mass flow rate and skin-friction are given.
Journal ArticleDOI
Oscillatory Couette flow in the presence of an inclined magnetic field
TL;DR: In this article, an exact solution of the governing equations has been obtained by using Laplace transform technique for oscillatory MHD Couette flow of electrically conducting fluid between two parallel plates in a rotating system in the presence of an inclined magnetic field is considered when the upper plate is held at rest and the lower plate oscillates non-torsionally.
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