Entropy Generation in MHD Conjugate Flow with Wall Shear Stress over an Infinite Plate: Exact Analysis

Abstract

The current work will describe the entropy generation in an unsteady magnetohydrodynamic (MHD) flow with a combined influence of mass and heat transfer through a porous medium. It will consider the flow in the XY plane and the plate with isothermal and ramped wall temperature. The wall shear stress is also considered. The influences of different pertinent parameters on velocity, the Bejan number and on the total entropy generation number are reported graphically. Entropy generation in the fluid is controlled and reduced on the boundary by using wall shear stress. It is observed in this paper that by taking suitable values of pertinent parameters, the energy losses in the system can be minimized. These parameters are the Schmitt number, mass diffusion parameter, Prandtl number, Grashof number, magnetic parameter and modified Grashof number. These results will play an important role in the heat flow of uncertainty and must, therefore, be controlled and managed effectively.

Entropy generation analysis for MHD flow of water past an accelerated plate

“…They noted that the classical solutions can be obtained in a limiting sense for the unit value of the fractional parameter. Khan et al 16 applied the classical approach for both the formulation and solution and examined the entropy generation in an unsteady MHD flow with a combined influence of heat and mass transfer through a porous medium where the plate they consider is isothermal and ramped wall temperature.…”

Impacts of Uniform Magnetic Field and Internal Heated Vertical Plate on Ferrofluid Free Convection and Entropy Generation in a Square Chamber

“…Therefore, the entropy generation minimization theory can help to perform a theoretical analysis of such systems [11][12][13]. Some interesting and useful results regarding MHD natural convection and entropy generation in closed chambers have been already obtained [14][15][16][17][18][19][20][21][22][23][24]. Mahmoudi et al [14] have numerically analyzed thermal convection and entropy production in a trapezoidal chamber filled with copper-water nanosuspension with isoflux local heater and isothermal vertical and inclined walls.…”

“…Thus, irreversibilities due to energy transference and liquid friction are the majority for Ra = 10 3 and 10 5 , while for Ra = 10 4 , one can find a comparable influence of all mechanisms included in the analysis of irreversibility. Other useful results regarding entropy generation can be found in [18][19][20][21][22][23].…”

Entropy Generation in C6H9NAO7 Fluid Over an Accelerated Heated Plate

“…The exact analytical results for velocity, temperature, EG, and Bejan number were obtained via the Laplace-transform technique and presented in figures and tables with physical explanations. Khan et al [13] described the EG in unsteady magnetic fluid dynamics (MHD) flow through porous media, combining the effects of mass and heat transfer. The effects of several factors on EG, Bejan number, and velocity distribution were reported in numerous figures.…”