Open Access
ARTICLE
EFFECTS OF VARIABLE VISCOSITY ON HEAT AND MASS TRANSFER BY MHD MIXED CONVECTION FLOW ALONG A VERTICAL CYLINDER EMBEDDED IN A NON-DARCY POROUS MEDIUM
Saddam Atteyia Mohammad*
Mechanical Engineering Department, College of Engineering, University of Mosul, Mosul 41002, Iraq
* Corresponding Author: Email:
Frontiers in Heat and Mass Transfer 2020, 14, 1-10. https://doi.org/10.5098/hmt.14.7
Abstract
An analysis was performed to study the effects of variable viscosity on steady, laminar, hydromagnetic simultaneous heat and mass transfer by mixed
convection flow along a vertical cylinder embedded in a non-Darcy porous medium. The analysis was performed for the case of power-law variations
of both the surface temperature and concentration. The viscosity of the fluid is assumed to be an inverse linear function of temperature. Certain
transformations were employed to transform the governing differential equations to non-similar form. The transformed equations were solved
numerically by finite difference method. The entire regime of mixed convection was studied. From this study it can be concluded that increasing the
values of power law index, curvature parameter and buoyancy ratio leads to enhance the local Nusselt and Sherwood numbers. The local Nusselt and
Sherwood numbers weaken as the inertia effect parameter and the square of the Hartmann number increases. The raise in the value of the Lewis number
decreases the rate of heat transfer while increases the rate of mass transfer. For lower values of viscosity, the heat transfer increased for both gases and
liquids, while the mass transfer decreased for gases and increased for liquids.
Keywords
Cite This Article
Mohammad, S. A. (2020). EFFECTS OF VARIABLE VISCOSITY ON HEAT AND MASS TRANSFER BY MHD MIXED CONVECTION FLOW ALONG A VERTICAL CYLINDER EMBEDDED IN A NON-DARCY POROUS MEDIUM.
Frontiers in Heat and Mass Transfer, 14(1), 1–10.