### 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 λ_{1}, 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 language | English |
---|---|

Pages (from-to) | 288-309 |

Number of pages | 22 |

Journal | Results in Physics |

Volume | 7 |

DOIs | |

State | Published - 2017 |

### Fingerprint

### Keywords

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

### ASJC Scopus subject areas

- Physics and Astronomy(all)

### Cite this

*Results in Physics*,

*7*, 288-309. DOI: 10.1016/j.rinp.2016.12.032

**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.

Research output: Contribution to journal › Article

*Results in Physics*, vol 7, pp. 288-309. DOI: 10.1016/j.rinp.2016.12.032

}

TY - JOUR

T1 - Analysis of heat transfer for unsteady MHD free convection flow of rotating Jeffrey nanofluid saturated in a porous medium

AU - Mohd Zin,Nor Athirah

AU - Khan,Ilyas

AU - Shafie,Sharidan

AU - Alshomrani,Ali Saleh

PY - 2017

Y1 - 2017

N2 - 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.

AB - 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.

KW - AgNPs

KW - Jeffrey nanofluid

KW - Laplace transform technique

KW - MHD and Porosity

KW - Rotating flow

UR - http://www.scopus.com/inward/record.url?scp=85008420144&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85008420144&partnerID=8YFLogxK

U2 - 10.1016/j.rinp.2016.12.032

DO - 10.1016/j.rinp.2016.12.032

M3 - Article

VL - 7

SP - 288

EP - 309

JO - Results in Physics

T2 - Results in Physics

JF - Results in Physics

SN - 2211-3797

ER -