Analysis of heat transfer for unsteady MHD free convection flow of rotating Jeffrey nanofluid saturated in a porous medium

Nor Athirah Mohd Zin, Ilyas Khan, Sharidan Shafie, Ali Saleh Alshomrani

Research output: Contribution to journalArticle

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Abstract

In this article, the influence of thermal radiation on unsteady magnetohydrodynamics (MHD) free convection flow of rotating Jeffrey nanofluid passing through a porous medium is studied. The silver nanoparticles (AgNPs) are dispersed in the Kerosene Oil (KO) which is chosen as conventional base fluid. Appropriate dimensionless variables are used and the system of equations is transformed into dimensionless form. The resulting problem is solved using the Laplace transform technique. The impact of pertinent parameters including volume fraction φ, material parameters of Jeffrey fluid λ1, λ, rotation parameter r, Hartmann number Ha, permeability parameter K, Grashof number Gr, Prandtl number Pr, radiation parameter Rd and dimensionless time t on velocity and temperature profiles are presented graphically with comprehensive discussions. It is observed that, the rotation parameter, due to the Coriolis force, tends to decrease the primary velocity but reverse effect is observed in the secondary velocity. It is also observed that, the Lorentz force retards the fluid flow for both primary and secondary velocities. The expressions for skin friction and Nusselt number are also evaluated for different values of emerging parameters. A comparative study with the existing published work is provided in order to verify the present results. An excellent agreement is found.

Original languageEnglish
Pages (from-to)288-309
Number of pages22
JournalResults in Physics
Volume7
DOIs
StatePublished - 2017

Fingerprint

free convection
magnetohydrodynamics
fluids
Hartmann number
Grashof number
kerosene
skin friction
Lorentz force
thermal radiation
Prandtl number
Nusselt number
temperature profiles
fluid flow
emerging
permeability
velocity distribution
oils
heat transfer
silver
nanoparticles

Keywords

  • AgNPs
  • Jeffrey nanofluid
  • Laplace transform technique
  • MHD and Porosity
  • Rotating flow

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Analysis of heat transfer for unsteady MHD free convection flow of rotating Jeffrey nanofluid saturated in a porous medium. / Mohd Zin, Nor Athirah; Khan, Ilyas; Shafie, Sharidan; Alshomrani, Ali Saleh.

In: Results in Physics, Vol. 7, 2017, p. 288-309.

Research output: Contribution to journalArticle

Mohd Zin, Nor Athirah; Khan, Ilyas; Shafie, Sharidan; Alshomrani, Ali Saleh / Analysis of heat transfer for unsteady MHD free convection flow of rotating Jeffrey nanofluid saturated in a porous medium.

In: Results in Physics, Vol. 7, 2017, p. 288-309.

Research output: Contribution to journalArticle

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