Analysis of entropy generation in an MHD flow over a rotating porous disk with variable physical properties

AbstractThis article examines the entropy generation in the magnetohydrodynamics (MHD) flow of Newtonian fluid (water) under the effect of applied magnetic in the absence of an induced magnetic field. More precisely, the flow of water is considered past an accelerated plate such that the fluid is receiving constant heating from the initial plate. The fluid disturbance away from the plate is negligible, therefore, the domain of flow is considered as semi-infinite. The flow and heat transfer problem is considered in terms of differential equations with physical conditions and then the corresponding equations for entropy generation and Bejan number are developed. The problem is solved for exact solutions using the Laplace transform and finite difference methods. Results are displayed in graphs and tables and discussed for embedded flow parameters. Results showed that the magnetic field has a strong influence on water flow, entropy generation, and Bejan number.

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Analysis of entropy generation in a power-law nanofluid flow over a stretchable rotatory porous disk

Case Studies in Thermal Engineering ◽

10.1016/j.csite.2021.101370 ◽

2021 ◽

Vol 28 ◽

pp. 101370 ◽

Cited By ~ 3

Author(s):

Usman ◽

Abuzar Ghaffari ◽

Irfan Mustafa ◽

Taseer Muhammad ◽

Yasir Altaf

Keyword(s):

Entropy Generation ◽

Power Law ◽

Porous Disk ◽

Nanofluid Flow ◽

Power Law Nanofluid

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Entropy generation on MHD flow of a Casson fluid over a curved stretching surface with exponential space‐dependent heat source and nonlinear thermal radiation

Heat Transfer ◽

10.1002/htj.22389 ◽

2021 ◽

Author(s):

Tunde A. Yusuf ◽

Rasaq A. Kareem ◽

Samuel O. Adesanya ◽

Jacob A. Gbadeyan

Keyword(s):

Heat Source ◽

Thermal Radiation ◽

Entropy Generation ◽

Mhd Flow ◽

Casson Fluid ◽

Nonlinear Thermal Radiation ◽

Stretching Surface ◽

Exponential Space

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Heat transfer analysis on MHD flow over a stretchable Riga wall considering Entropy generation rate: A numerical study

Numerical Methods for Partial Differential Equations ◽

10.1002/num.22694 ◽

2020 ◽

Author(s):

Faisal Shah ◽

Muhammad Ijaz Khan ◽

Yu‐Ming Chu ◽

Seifedine Kadry

Keyword(s):

Heat Transfer ◽

Entropy Generation ◽

Numerical Study ◽

Mhd Flow ◽

Heat Transfer Analysis ◽

Generation Rate ◽

Entropy Generation Rate

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Entropy Generation on Maxwell Fluid Flow Past an Inclined Stretching Plate with Slip and Convective Surface Conditon: Darcy-Forchheimer Model

Nano Hybrids and Composites ◽

10.4028/www.scientific.net/nhc.26.62 ◽

2019 ◽

Vol 26 ◽

pp. 62-83

Author(s):

Tunde Abdulkadir Yusuf ◽

Jacob Abiodun Gbadeyan

Keyword(s):

Porous Medium ◽

Differential Equations ◽

Entropy Generation ◽

Mhd Flow ◽

Maxwell Fluid ◽

Entropy Generation Rate ◽

Physical Parameters ◽

Convective Boundary ◽

Linear Ordinary Differential Equations ◽

Non Linear

In this study the effect of entropy generation on two dimensional magnetohydrodynamic (MHD) flow of a Maxwell fluid over an inclined stretching sheet embedded in a non-Darcian porous medium with velocity slip and convective boundary condition is investigated. Darcy-Forchheimer based model was employed to describe the flow in the porous medium. The non-linear thermal radiation is also taken into account. Similarity transformation is used to convert the non-linear partial differential equations to a system of non-linear ordinary differential equations. The resulting transformed equations are then solved using the Homotopy analysis method (HAM). Influence of various physical parameters on the dimensionless velocity profile, temperature profile and entropy generation are shown graphically and discussed in detail while the effects of these physical parameters on velocity gradient and temperature gradient are aided with the help of Table. Furthermore, comparison of some limiting cases of this model was made with existing results. The results obtained are found to be in good agreement with previously published results. Moreover, increase in local inertial coefficient parameter is found to decrease the entropy generation rate.

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Prediction of MHD flow and entropy generation by Artificial Neural Network in square cavity with heater-sink for nanomaterial

Physica A Statistical Mechanics and its Applications ◽

10.1016/j.physa.2019.123520 ◽

2020 ◽

Vol 541 ◽

pp. 123520 ◽

Cited By ~ 25

Author(s):

Khan Md. Rabbi ◽

M. Sheikholeslami ◽

Anwarul Karim ◽

Ahmad Shafee ◽

Zhixiong Li ◽

...

Keyword(s):

Neural Network ◽

Artificial Neural Network ◽

Entropy Generation ◽

Mhd Flow ◽

Square Cavity ◽

Artificial Neural

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MHD Flow of Cu-Al2O3/Water Hybrid Nanofluid in Porous Channel: Analysis of Entropy Generation

Defect and Diffusion Forum ◽

10.4028/www.scientific.net/ddf.377.42 ◽

2017 ◽

Vol 377 ◽

pp. 42-61 ◽

Cited By ~ 45

Author(s):

Sanatan Das ◽

Rabindra Nath Jana ◽

Oluwole Daniel Makinde

Keyword(s):

Entropy Generation ◽

Mhd Flow ◽

Transverse Magnetic ◽

Porous Channel ◽

Hybrid Nanofluid ◽

Bejan Number ◽

Governing Equations ◽

Transfer Enhancement ◽

Entropy Generation Number ◽

Channel Analysis

In this investigation, a magnetohydrodynamic (MHD) flow of AlO /water nanofluid and Cu-AlO /water hybrid nanofluid through a porous channel is analyzed in the presence of a transverse magnetic field. An exact solution of the governing equations has been obtained in closed form. The entropy generation number and the Bejan number are also obtained. The influences of each of the governing parameters on velocity, temperature, entropy generation and Bejan number are displayed graphically and the physical aspects are discussed. In addition, a comparison of the heat transfer enhancement level due to the suspension of AlO and Cu nanoparticles in water as regular nanofluids and as hybrid Cu-AlO /water nanofluid is reported.

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