Effect of slip on entropy generation in a single rotating disk in MHD flow

Arıkoğlu, Aytaç; Özkol, İbrahim; Kömürgöz, Güven

doi:10.1016/j.apenergy.2008.03.004

Cited by 87 publications

(33 citation statements)

References 31 publications

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“…Bejan [20][21][22] calculated for the first time the volumetric entropy generation rate in a fluid flow process. After the seminal work of Bejan, many researchers have performed thermodynamic analysis of flows and heat transfers in order to minimize entropy production [23][24][25][26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Entropy Generation in Magnetohydrodynamic Mixed Convection Flow over an Inclined Stretching Sheet

Afridi

Qasim

Khan

et al. 2016

Entropy

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This research focuses on entropy generation rate per unit volume in magneto-hydrodynamic (MHD) mixed convection boundary layer flow of a viscous fluid over an inclined stretching sheet. Analysis has been performed in the presence of viscous dissipation and non-isothermal boundary conditions. The governing boundary layer equations are transformed into ordinary differential equations by an appropriate similarity transformation. The transformed coupled nonlinear ordinary differential equations are then solved numerically by a shooting technique along with the Runge-Kutta method. Expressions for entropy generation (Ns) and Bejan number (Be) in the form of dimensionless variables are also obtained. Impact of various physical parameters on the quantities of interest is seen.

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Section: Introductionmentioning

confidence: 99%

Entropy Generation in Magnetohydrodynamic Mixed Convection Flow over an Inclined Stretching Sheet

Afridi

Qasim

Khan

et al. 2016

Entropy

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“…One part of entropy generation is due to heat transfer in the direction of temperature gradients, whereas others may be due to fluid friction irreversibility, Joule heating, viscous heating. Conferring to (Bejan, 1982, 1996, Arikoglu and Ozkol, 2008) the volumetric entropy generation rate for the considered axisymmetric flow of Powell-Eyring fluid in the presence of magnetic field is given by:…”

Section: Entropy Generationmentioning

confidence: 99%

Entropy Generation on MHD Flow of Powell-Eyring Fluid Between Radially Stretching Rotating Disk with Diffusion-Thermo and Thermo-Diffusion Effects

Khan

Aziz

Ullah

2017

Acta Mechanica Et Automatica

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An investigation is performed for an alyzing the effect of entropy generation on the steady, laminar, axisymmetric flow of an incompressible Powell-Eyring fluid. The flow is considered in the presence of vertically applied magnetic field between radially stretching rotating disks. The Energy and concentration equation is taking into account to investigate the heat dissipation, Soret, Dufour and Joule heating effects. To describe the considered flow non-dimensionalized equations, an exact similarity function is used to reduce a set of the partial differential equation into a system of non-linear coupled ordinary differential equation with the associated boundary conditions. Using homotopy analysis method (HAM), an analytic solution for velocity, temperature and concentration profiles are obtained over the entire range of the imperative parameters. The velocity components, concentration and temperature field are used to determine the entropy generation. Plots illustrate important results on the effect of physical flow parameters. Results obtained by means of HAM are then compared with the results obtained by using optimized homotopy analysis method (OHAM). They are in very good agreement.

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“…al [26]. From a theoretical perspective, the second law of thermodynamics is utilized to study energy producing, converting and consuming systems.…”

Section: Entropy Generation Analysismentioning

confidence: 99%

On Unsteady Three-Dimensional Axisymmetric MHD Nanofluid Flow with Entropy Generation and Thermo-Diffusion Effects

Almakki¹,

Dey²,

Mondal³

et al. 2017

Preprint

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Abstract:We investigate entropy generation in unsteady three-dimensional axisymmetric MHD nanofluid flow over a non-linearly stretching sheet. The flow is subject to thermal radiation and a chemical reaction. The conservation equations were solved using the spectral quasi-linearization method. The novelty of the work is in the study of entropy generation in three-dimensional axisymmetric MHD nanofluid and the choice of the spectral quasilinearization method as the solution method. The effects of Brownian motion and thermophoresis are also taken into account when the nanofluid particle volume fraction on the boundary in passively controlled. The results show that as the Hartman number increases, both the Nusselt number and the Sherwood number decrease whereas the skin friction increases. It is further shown that an increase in the thermal radiation parameter corresponds to a decrease in the Nusselt number. Moreover, entropy generation increases with the physical parameters.

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Effect of slip on entropy generation in a single rotating disk in MHD flow

Cited by 87 publications

References 31 publications

Entropy Generation in Magnetohydrodynamic Mixed Convection Flow over an Inclined Stretching Sheet

Entropy Generation in Magnetohydrodynamic Mixed Convection Flow over an Inclined Stretching Sheet

Entropy Generation on MHD Flow of Powell-Eyring Fluid Between Radially Stretching Rotating Disk with Diffusion-Thermo and Thermo-Diffusion Effects

On Unsteady Three-Dimensional Axisymmetric MHD Nanofluid Flow with Entropy Generation and Thermo-Diffusion Effects

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