Heat transfer effects on carbon nanotubes suspended nanofluid flow in a channel with non-parallel walls under the effect of velocity slip boundary condition: a numerical study

Abstract Steady forced convection of non-Newtonian nanofluids around a confined semi-circular cylinder subjected to a uniform magnetic field is carried out using ANSYS FLUENT. The numerical solution is obtained using the finite volume method. The user-defined scalar (UDS) is used for the first time to calculate the second order velocity slip boundary condition in semi-circular curved surface and the calculated results are compared with those of the first order velocity slip boundary condition. Besides, the effects of volume fraction, size, type of nanoparticles and magnetic field strength on heat transfer are studied. The present study displays that adding nanoparticles in non-Newtonian fluids significantly enhances heat transfer. In addition, it is observed that the heat transfer rate decreases first and then increases with the increase of Hartmann number. The effects of blocking rate on Nusselt number, wake length and heat transfer effect are shown in the form of graphs or tables.

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Effects of the slip boundary condition on dynamics and pull-in instability of carbon nanotubes conveying fluid

Microfluidics and Nanofluidics ◽

10.1007/s10404-018-2156-z ◽

2018 ◽

Vol 22 (11) ◽

Cited By ~ 1

Author(s):

Himan Rashidi ◽

Zaher Rahimi ◽

Wojciech Sumelka

Keyword(s):

Carbon Nanotubes ◽

Boundary Condition ◽

Slip Boundary Condition ◽

Slip Boundary ◽

Conveying Fluid

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Numerical Study of Surface Heat Transfer Effects of Multiple Fan-Shaped Small-Scale Fins

Transactions of the Korean Society of Mechanical Engineers B ◽

10.3795/ksme-b.2013.37.5.523 ◽

2013 ◽

Vol 37 (5) ◽

pp. 523-530

Author(s):

Ki-Hong Park ◽

Sang Hu Park ◽

Ju-Chul Lee ◽

June-Kee Min ◽

Man-Yeong Ha

Keyword(s):

Heat Transfer ◽

Numerical Study ◽

Surface Heat ◽

Small Scale ◽

Transfer Effects ◽

Surface Heat Transfer ◽

Heat Transfer Effects

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Impact of Nonlinear Chemical Reaction and Melting Heat Transfer on an MHD Nanofluid Flow over a Thin Needle in Porous Media

Applied Sciences ◽

10.3390/app9245492 ◽

2019 ◽

Vol 9 (24) ◽

pp. 5492 ◽

Cited By ~ 1

Author(s):

Muhammad Ramzan ◽

Hina Gul ◽

Seifedine Kadry ◽

Chhayly Lim ◽

Yunyoung Nam ◽

...

Keyword(s):

Heat Transfer ◽

Chemical Reaction ◽

Flow Analysis ◽

Slip Boundary Condition ◽

Stream Velocity ◽

Nanofluid Flow ◽

Melting Heat ◽

Slip Boundary ◽

Melting Heat Transfer ◽

The Impact

A novel mathematical model is envisioned discussing the magnetohydrodynamics (MHD) steady incompressible nanofluid flow with uniform free stream velocity over a thin needle in a permeable media. The flow analysis is performed in attendance of melting heat transfer with nonlinear chemical reaction. The novel model is examined at the surface with the slip boundary condition. The compatible transformations are affianced to attain the dimensionless equations system. Illustrations depicting the impact of distinct parameters versus all involved profiles are supported by requisite deliberations. It is perceived that the melting heat parameter has a declining effect on temperature profile while radial velocity enhances due to melting.

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