Effect of viscous dissipation and Joule heating on MHD radiative tangent hyperbolic nanofluid with convective and slip conditions

In this article, we perform an entropy generation analysis for the micro channel heat sink applications where the flow of fluid is actuated by combined influences of applied pressure gradient and electric field under electrical double layer phenomenon. The upper and lower walls of the channels are kept at different constant temperatures. The temperature-dependent viscosity of the fluid is considered and hence the momentum equation and energy equations are coupled in this study. Also, a hydrodynamic slip condition is employed on the viscous dissipation. For complete analysis of the entropy generation, we use a perturbation approach with lubrication approximation. In this study, we discuss the results depicting variations in the velocity and temperature distributions and their effect on local entropy generation rate and Bejan number in the system. It can be summarized from this analysis that the enhanced velocity gradients in the flow field due to combined effect of temperature-dependent viscosity and Joule heating and viscous dissipative effects, leads to an enhancement in the local entropy generation rate in the system.

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Joule heating and viscous dissipation effects on MHD flow past a semi-infinite inclined plate with variable surface temperature

Journal of Engineering Thermophysics ◽

10.1134/s1810232811040138 ◽

2011 ◽

Vol 20 (4) ◽

pp. 501-517 ◽

Cited By ~ 5

Author(s):

G. Palani ◽

Kwang Yong Kim

Keyword(s):

Surface Temperature ◽

Viscous Dissipation ◽

Joule Heating ◽

Mhd Flow ◽

Inclined Plate ◽

Flow Past ◽

Variable Surface ◽

Variable Surface Temperature

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Combined effects of viscous dissipation and Joule heating on MHD Sisko nanofluid over a stretching cylinder

Journal of Molecular Liquids ◽

10.1016/j.molliq.2017.02.030 ◽

2017 ◽

Vol 231 ◽

pp. 341-352 ◽

Cited By ~ 66

Author(s):

Arif Hussain ◽

M.Y. Malik ◽

T. Salahuddin ◽

S. Bilal ◽

M. Awais

Keyword(s):

Viscous Dissipation ◽

Joule Heating ◽

Stretching Cylinder ◽

Combined Effects

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Influence of nonlinear thermal radiation and viscous dissipation on three-dimensional flow of Jeffrey nano fluid over a stretching sheet in the presence of Joule heating

Nonlinear Engineering ◽

10.1515/nleng-2017-0014 ◽

2017 ◽

Vol 6 (3) ◽

Cited By ~ 11

Author(s):

K. Ganesh Kumar ◽

N.G. Rudraswamy ◽

B.J. Gireesha ◽

M.R. Krishnamurthy

Keyword(s):

Differential Equations ◽

Thermal Radiation ◽

Ordinary Differential Equations ◽

Viscous Dissipation ◽

Joule Heating ◽

Stretching Sheet ◽

Three Dimensional ◽

Nonlinear Thermal Radiation ◽

Nonlinear Ordinary Differential Equations ◽

Three Dimensional Flow

AbstractPresent exploration discusses the combined effect of viscous dissipation and Joule heating on three dimensional flow and heat transfer of a Jeffrey nanofluid in the presence of nonlinear thermal radiation. Here the flow is generated over bidirectional stretching sheet in the presence of applied magnetic field by accounting thermophoresis and Brownian motion of nanoparticles. Suitable similarity transformations are employed to reduce the governing partial differential equations into coupled nonlinear ordinary differential equations. These nonlinear ordinary differential equations are solved numerically by using the Runge–Kutta–Fehlberg fourth–fifth order method with shooting technique. Graphically results are presented and discussed for various parameters. Validation of the current method is proved by comparing our results with the existing results under limiting situations. It can be concluded that combined effect of Joule and viscous heating increases the temperature profile and thermal boundary layer thickness.

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Two-parameter Lie convective Casson fluid scale study with MHD, joule heating and viscous dissipation influences

Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science ◽

10.1177/0954406220964843 ◽

2020 ◽

pp. 095440622096484

Author(s):

Muhammad Nazim Tufail ◽

Musharafa Saleem ◽

Qasim Ali Chaudhry

Keyword(s):

Differential Equations ◽

Viscous Dissipation ◽

Joule Heating ◽

Casson Fluid ◽

Graphical Analysis ◽

Thermal Transfer ◽

Fluid Parameter ◽

Two Parameters ◽

Unsteady Effects ◽

Physical Quantities

The model encountered an unsteady laminar and two-dimensional convective flow of Casson fluid passing through an inclined permeable vertical stretching sheet. The momentum, thermal and concentrated boundary layers (BLs) are used to analyze the unsteady effects of magnetohydrodynamics (MHD) (neglecting induced magnetic field), viscous dissipation, Joule heating and chemical reactions. The governed partial differential equations (PDEs) of the model are reduced to the ordinary differential equations (ODEs). The ξ and χ are selected as the two parameters of the scaling transformations. By using bvp4c with MATLAB, the ODEs are solved numerically and represent their results through the graphs and tables. After the non-dimensionalizing of the equations system, we get the emerging dimensionless parameters. The concentration process was enhanced by the Casson fluid parameter but it reduced the fluid flow and thermal transfer that can be found through the graphical results. The effect of Buoyancy is highlighted as it reduced the velocity profile function, but it is a growing function of the thermal and concentrated profiles. The physical quantities are integrated through the table and graphical analysis. In the center of the wall, the number Shx versus Sc decreases, but at the end it increases.

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