Abstract
In this work, a numerical method is applied to investigate the magnetohydrodynamic flow and heat transfer of several nanofluids caused by a shrinking sheet in a porous medium. The influences of several parameters such as nanoparticle volume fraction, suction parameter, and the Hartmann number on the heat transfer rate, velocity, and temperature profiles and also skin friction are presented and studied. In addition, it is observed that by increasing the nanoparticle volume fraction, the temperature profile, skin friction, and Nusselt number increase, while the velocity profile has not changed remarkably.
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Abbreviations
- u :
-
Velocity component along the x direction
- v :
-
Velocity component along the y direction
- w :
-
Velocity component along the z direction
- k f :
-
Thermal conductivity of the base fluid
- k s :
-
Thermal conductivity of the nanoparticle
- k nf :
-
Thermal conductivity of the nanofluid
- M :
-
Hartman number
- S :
-
Suction/blowing parameter
- Pr :
-
Prandtl number
- C f :
-
Skin friction coefficient
- Nu x :
-
Local Nusselt number
- U :
-
Free stream velocity
- q w :
-
Heat transfer from the surface
- Re x :
-
Local Reynolds number
- T w :
-
Wall temperature
- T ∞ :
-
Far field stream temperature
- τ w :
-
Wall shear stress
- λ 1 :
-
Constant from power law
- ρ f :
-
Density of the base fluid
- ρ nf :
-
Density of the nanofluid
- μ f :
-
Viscosity of the base fluid
- μ nf :
-
Viscosity of the nanofluid
- \( \phi \) :
-
Nanoparticle volume fraction
- λ :
-
Porosity
- f:
-
Base fluid
- s:
-
Nanoparticle
- nf:
-
Nanofluid
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Valipour, P., Ghasemi, S.E. Numerical investigation of MHD water-based nanofluids flow in porous medium caused by shrinking permeable sheet. J Braz. Soc. Mech. Sci. Eng. 38, 859–868 (2016). https://doi.org/10.1007/s40430-014-0303-3
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DOI: https://doi.org/10.1007/s40430-014-0303-3