Effects of Magnetic Field on Entropy Generation in Flow and Heat Transfer due to a Radially Stretching Surface

Abstract

We investigate the effects of magnetic field on the entropy generation during fluid flow and heat transfer due to the radially stretching surface. The partial differential equations governing the flow and heat transfer phenomenon are transformed into nonlinear ordinary differential equations by using suitable similarity transformations. These equations are then solved by the homotopy analysis method and the shooting technique. The effects of the magnetic field parameter 𝑀 and the Prandtl number 𝑃 𝑟 on velocity and the temperature profiles are presented. Moreover, influence of the magnetic field parameter 𝑀 and the group parameter 𝐵𝑟/Ω on the local entropy generation number 𝑁𝑠 as well as the Bejan number 𝐵𝑒 are inspected. It is observed that the magnetic field is a strong source of entropy production in the considered problem.

Influence of MHD on Thermal Behavior of Darcy-Forchheimer Nanofluid Thin Film Flow over a Nonlinear Stretching Disc

“…The pressure is considered as constant. All others assumptions for the flow phenomena are used as in [24][25][26]. The leading equations are considered as:…”

“…Attia et al [25] examined the stagnation point flow in a porous medium over a radially extending surface. But and Ali [26] scrutinized the MHD flow and heat transfer with entropy generation rate over a radially stretching surface. Zeeshan et al [27] examined ferrofluid flow over a stretching sheet under the influence of ferromagnetism, thermal radiation, and the Prandtl number.…”

Mathematical Analysis of a Reactive Viscous Flow through a Channel Filled with a Porous Medium

“…Hedayati et al [9] utilized the thermodynamics analysis to optimize flow on a nonstationary wedge. Butt and Ali [10] reported the irreversibility analysis of fluid slippage with convective boundaries. Other works that focused on the minimization of energy losses in a fluid flow can be found in references [11][12][13][14][15][16][17][18][19] and many more too numerous to be listed.…”

Thermodynamical Analysis of the Flow and Heat Transfer over a Static and a Moving Wedge

“…The study of entropy production in MHD slip flow over a vertical surface with convective boundary was done by Butt et al [20]. Munawar and Ali [21] examined the entropy generation in fluid flow and heat transfer over an oscillating stretching cylinder. The effects of magnetic field on entropy generation in flow over a radially stretching sheet were investigated by Butt and Ali [22].…”