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Variability Effects on MHD for Blasius and Sakiadis Flows in the Presence of Dufour and Soret about a Flat Plate
  • Onyekachukwu Oyem,
  • Winifred MutukuOrcid,
  • Oke Abayomi
Onyekachukwu Oyem
Islamic University in Uganda
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Winifred Mutuku
Orcid
Kenyatta University
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Oke Abayomi
Kenyatta University
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Peer review status:ACCEPTED

01 Feb 2020Submitted to Engineering Reports
05 Feb 2020Submission Checks Completed
05 Feb 2020Assigned to Editor
20 Feb 2020Reviewer(s) Assigned
06 Apr 2020Editorial Decision: Revise Major
31 May 20201st Revision Received
02 Jun 2020Submission Checks Completed
02 Jun 2020Assigned to Editor
02 Jun 2020Reviewer(s) Assigned
15 Jun 2020Editorial Decision: Revise Minor
26 Jun 20202nd Revision Received
26 Jun 2020Submission Checks Completed
26 Jun 2020Assigned to Editor
29 Jun 2020Editorial Decision: Accept

Abstract

A study is considered to a steady, two-dimensional boundary layer flow of an incompressible MHD fluid for the Blasius and Sakiadis flows about a flat plate in the presence of thermo-diffusion (Dufour) and thermal-diffusion (Soret) effects for variable parameters. The governing partial differential equations are transformed into a system of nonlinear ordinary differential equations using similarity variables. The transformed systems are solved numerically by Runge-Kutta Gills method with shooting techniques. The variations of the flow velocity, temperature and concentration as well as the characteristics of heat and mass transfer are presented graphically with tabulated results. The numerical computations show that thermal boundary layer thickness is found to be increased with increasing values of Eckert number (Ec), Prandtl number (Pr) and local Grashof number (Gr_x) for both Blasius and Sakiadis flow. The Blasius flow elevates the thickness of the thermal boundary layer compared with the Sakiadis flow. The local magnetic field has shown that flow is retarded in the boundary layer but enhances temperature and concentration distributions.