MHD MIXED CONVECTION FLOW AND HEAT TRANSFER ON A MOVING INCLINED PERMEABLE SHEET WITH AN ALINGED MAGNETIC FIELD

The main aim of the present work is to highlight the significances of periodic mixed convection flow and heat transfer characteristics along the surface of magnetized cone by exerting magnetic field exact at the surface of the cone. The numerical simulations of coupled non-dimensional equations are computed in terms of velocity field, temperature and magnetic field concentration and then used to examine the periodic components of skin friction, ?w, heat transfer, qw, and current density, jw, for various governing parameters. A nice periodic behavior of heat transfer qw is concluded for each value of mixed convection parameter, ?, but maximum periodicity is sketched at ? = 50. It is also computed that the lower value of magnetic Prandtl number ? = 0.1 gets poor amplitude in current density but highest amplitude is sketched for higher ? = 0.5. The behavior of heat and fluid-flow in the pres?ence of aligned magnetic field is associated with the phase angle and amplitude of oscillation. It is also noted that due to the increase in magnetic force parameter, ?, there are wave like disturbances generate within the fluid layers. These disturbances are basically hydromagnetic waves which becomes more prominent as the strength of magnetic force parameter is increased.

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Mixed convection flow and heat transfer mechanism for non-Newtonian Carreau nanofluids under the effect of infinite shear rate viscosity

Physica Scripta ◽

10.1088/1402-4896/ab41e9 ◽

2020 ◽

Vol 95 (3) ◽

pp. 035225 ◽

Cited By ~ 1

Author(s):

Hashim ◽

Humara Sardar ◽

Masood Khan

Keyword(s):

Heat Transfer ◽

Shear Rate ◽

Mixed Convection ◽

Transfer Mechanism ◽

Convection Flow ◽

Heat Transfer Mechanism ◽

Mixed Convection Flow ◽

Flow And Heat Transfer

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Unsteady mixed convection flow at a three-dimensional stagnation point

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

10.1108/hff-03-2020-0138 ◽

2020 ◽

Vol ahead-of-print (ahead-of-print) ◽

Author(s):

Amin Noor ◽

Roslinda Nazar ◽

Kohilavani Naganthran ◽

Ioan Pop

Keyword(s):

Heat Transfer ◽

Differential Equations ◽

Mixed Convection ◽

Stagnation Point ◽

Three Dimensional ◽

Convection Flow ◽

Mixed Convection Flow ◽

Content Type ◽

Flow And Heat Transfer ◽

Unsteady Mixed Convection

Purpose This paper aims to probe the problem of an unsteady mixed convection stagnation point flow and heat transfer past a stationary surface in an incompressible viscous fluid numerically. Design/methodology/approach The governing nonlinear partial differential equations are transformed into a system of ordinary differential equations by a similarity transformation, which is then solved numerically by a Runge – Kutta – Fehlberg method with shooting technique and a collocation method, namely, the bvp4c function. Findings The effects of the governing parameters on the fluid flow and heat transfer characteristics are illustrated in tables and figures. It is found that dual (upper and lower branch) solutions exist for both the cases of assisting and opposing flow situations. A stability analysis has also been conducted to determine the physical meaning and stability of the dual solutions. Practical implications This theoretical study is significantly relevant to the applications of the heat exchangers placed in a low-velocity environment and electronic devices cooled by fans. Originality/value The case of suction on unsteady mixed convection flow at a three-dimensional stagnation point has not been studied before; hence, all generated numerical results are claimed to be novel.

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