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ORIGINAL PAPER
Role of suction/injection on electromagnetohydrodynamics natural convection flow in a porous microchannel with electroosmotic effect
1
Department of Mathematics, Ahmadu Bello University
2
Department of Mathematics,, Ahmadu Bello University
Submission date: 2023-06-16
Acceptance date: 2023-09-28
Online publication date: 2023-12-19
Publication date: 2023-12-23
International Journal of Applied Mechanics and Engineering 2023;28(4):94-113
KEYWORDS
TOPICS
ABSTRACT
This paper examined the role of suction/injection on time-dependent electromagnetohydrodynamics (EMHD) natural (free) convection flow in a vertical microchannel with electroosmotic effect. With the aid of Laplace transformation method, the governing energy and momentum equations are converted from partial differential equation (PDE) into ordinary differential equation (ODE) to obtain fluid temperature and velocity in Laplace domain. The semi-analytical solutions of the velocity profile and temperature distribution have been derived using the Riemann sum approximation. After which a MATLAB program was written to study the effects of Prandlt number Pr, Hartmann number Ha, electric field strength on x and z directions (Ex and Sz) and Grashof number Gr in fluid velocity, temperature, skin-friction and mass flow rate in terms of line graphs. Result shows the role of suction/injection parameter alters the temperature distribution and velocity profile, so also how effective the governing parameters contribute to the flow formation. .
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