Flow and heat transfer over a rotating porous disk in a nanofluid

Norfifah Bachok, Anuar Mohd Ishak, Ioan Pop

Research output: Contribution to journalArticle

105 Citations (Scopus)

Abstract

The steady flow of an incompressible viscous fluid due to a rotating disk in a nanofluid is studied. The transformed boundary layer equations are solved numerically by a finite difference scheme, namely the Keller-box method. Numerical results for the flow and heat transfer characteristics are obtained for various values of the nanoparticle volume fraction parameter φ and suction/injection parameter h0. Two models for the effective thermal conductivity of the nanofluid, namely the MaxwellGarnett model and the Patel model, are considered. It is found that for the Patel model, the heat transfer rate at the surface increases for both suction and injection, whereas different behaviors are observed for the MaxwellGarnett model, i.e. increasing the values of φ leads to a decrease in the heat transfer rate at the surface for suction, but increases for injection. The results of this study can be used in the design of an effective cooling system for electronic components to help ensure effective and safe operational conditions.

Original languageEnglish
Pages (from-to)1767-1772
Number of pages6
JournalPhysica B: Condensed Matter
Volume406
Issue number9
DOIs
Publication statusPublished - 15 Apr 2011

Fingerprint

heat transfer
Heat transfer
suction
injection
boundary layer equations
cooling systems
steady flow
rotating disks
Rotating disks
viscous fluids
Steady flow
Cooling systems
boxes
Volume fraction
Thermal conductivity
Boundary layers
thermal conductivity
Nanoparticles
nanoparticles
Fluids

Keywords

  • Heat transfer
  • Nanofluid
  • Nanoparticles
  • Numerical solution
  • Rotating porous disk

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

Flow and heat transfer over a rotating porous disk in a nanofluid. / Bachok, Norfifah; Mohd Ishak, Anuar; Pop, Ioan.

In: Physica B: Condensed Matter, Vol. 406, No. 9, 15.04.2011, p. 1767-1772.

Research output: Contribution to journalArticle

Bachok, Norfifah ; Mohd Ishak, Anuar ; Pop, Ioan. / Flow and heat transfer over a rotating porous disk in a nanofluid. In: Physica B: Condensed Matter. 2011 ; Vol. 406, No. 9. pp. 1767-1772.
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