Influence of Variable Thermal Conductivity on MHD Boundary Layer Slip Flow of Ethylene-Glycol Based Cu Nanofluids over a Stretching Sheet with Convective Boundary Condition

Reddy, N. Bhaskar; Poornima, T.; Sreenivasulu, P.

doi:10.1155/2014/905158

Cited by 42 publications

(24 citation statements)

References 48 publications

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“…Finally, Vw is the constant suction/injection velocity across the surface. Commonly used property relations for nanofluids are presented as (for details see [31][32][33]):…”

Section: Physical Model and Formulationmentioning

confidence: 99%

Numerical investigation of magnetohydrodynamic slip flow of power-law nanofluid with temperature dependent viscosity and thermal conductivity over a permeable surface

et al. 2017

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Abstract:In this paper, a numerical investigation is carried out to study the effect of temperature dependent viscosity and thermal conductivity on heat transfer and slip flow of electrically conducting non-Newtonian nanofluids. The power-law model is considered for water based nanofluids and a magnetic field is applied in the transverse direction to the flow. The governing partial differential equations(PDEs) along with the slip boundary conditions are transformed into ordinary differential equations(ODEs) using a similarity technique. The resulting ODEs are numerically solved by using fourth order RungeKutta and shooting methods. Numerical computations for the velocity and temperature profiles, the skin friction coefficient and the Nusselt number are presented in the form of graphs and tables. The velocity gradient at the boundary is highest for pseudoplastic fluids followed by Newtonian and then dilatant fluids. Increasing the viscosity of the nanofluid and the volume of nanoparticles reduces the rate of heat transfer and enhances the thickness of the momentum boundary layer. The increase in strength of the applied transverse magnetic field and suction velocity increases fluid motion and decreases the temperature distribution within the boundary layer. Increase in the slip velocity enhances the rate of heat transfer whereas thermal slip reduces the rate of heat transfer.

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“…Finally, Vw is the constant suction/injection velocity across the surface. Commonly used property relations for nanofluids are presented as (for details see [31][32][33]):…”

Section: Physical Model and Formulationmentioning

confidence: 99%

Numerical investigation of magnetohydrodynamic slip flow of power-law nanofluid with temperature dependent viscosity and thermal conductivity over a permeable surface

et al. 2017

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“…Slip flow of Casson fluid with variable fluid physical property under radiation was studied by Poornima et al (2015). Bhaskar Reddy et al (2014) investigated the impact of variable thermal conductivity past a stretching sheet. Subba Rao et al (2016) studied the radiation effects past variable porosity with slip.…”

Section: Frontiers In Heat and Mass Transfermentioning

confidence: 99%

Variable Thermal Conductivity Influence on Hydromagnetic Flow Past a Stretching Cylinder in a Thermally Stratified Medium With Heat Source/Sink

Sreenivasulu¹,

Poornima²,

Reddy³

2017

Frontiers in Heat and Mass Transfer

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This paper examines the variable thermal conductivity influence on MHD flow past a thermally stratified stretching cylinder with heat source or sink. The governing partial differential equations of the flow field are converted to a system of non-linear coupled similarity ordinary differential equations. Employing Shooting technique followed by Runge-Kutta method, the system is solved numerically. The effects of the various physical parameters countered in the flow field on the velocity, temperature as well as the skin friction coefficient and the rate of heat transfer near the wall are computed and illustrated graphically.

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“…Following Maxwell [4], Bhaskar et al [34] and Arunachalam [42], the nanofluid's physical parameters are taken as:…”

Section: Mathematical Model Of the Problemmentioning

confidence: 99%

“…Noghrehabadi et al [33] observed the effects of partial slip boundary conditions on the flow and heat transfer of nanofluids. Bhaskar et al [34] carried out an analysis to investigate the influence of variable thermal conductivity and partial velocity slip on the hydromagnetic two-dimensional boundary layer flow of nanofluids over a porous sheet with a convective boundary condition. Noghrehabadi et al [35] carried out a study on the effects of variable thermal conductivity and viscosity on the natural convective heat transfer of nanofluids over a vertical plate.…”

Section: Introductionmentioning

confidence: 99%

Slip Flow and Heat Transfer of Nanofluids over a Porous Plate Embedded in a Porous Medium with Temperature Dependent Viscosity and Thermal Conductivity

Hussain

Aziz

et al. 2016

Applied Sciences

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Abstract:It is well known that the best way of convective heat transfer is the flow of nanofluids through a porous medium. In this regard, a mathematical model is presented to study the effects of variable viscosity, thermal conductivity and slip conditions on the steady flow and heat transfer of nanofluids over a porous plate embedded in a porous medium. The nanofluid viscosity and thermal conductivity are assumed to be linear functions of temperature, and the wall slip conditions are employed in terms of shear stress. The similarity transformation technique is used to reduce the governing system of partial differential equations to a system of nonlinear ordinary differential equations (ODEs). The resulting system of ODEs is then solved numerically using the shooting technique. The numerical values obtained for the velocity and temperature profiles, skin friction coefficient and Nusselt's number are presented and discussed through graphs and tables. It is shown that the increase in the permeability of the porous medium, the viscosity of the nanofluid and the velocity slip parameter decrease the momentum and thermal boundary layer thickness and eventually increase the rate of heat transfer.

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Influence of Variable Thermal Conductivity on MHD Boundary Layer Slip Flow of Ethylene-Glycol Based Cu Nanofluids over a Stretching Sheet with Convective Boundary Condition

Cited by 42 publications

References 48 publications

Numerical investigation of magnetohydrodynamic slip flow of power-law nanofluid with temperature dependent viscosity and thermal conductivity over a permeable surface

Numerical investigation of magnetohydrodynamic slip flow of power-law nanofluid with temperature dependent viscosity and thermal conductivity over a permeable surface

Variable Thermal Conductivity Influence on Hydromagnetic Flow Past a Stretching Cylinder in a Thermally Stratified Medium With Heat Source/Sink

Slip Flow and Heat Transfer of Nanofluids over a Porous Plate Embedded in a Porous Medium with Temperature Dependent Viscosity and Thermal Conductivity

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