Unsteady flow due to a contracting cylinder in a nanofluid using Buongiorno's model

Khairy Zaimi, Anuar Mohd Ishak, Ioan Pop

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

The unsteady flow and heat transfer of a nanofluid over a contracting cylinder is studied. Using a similarity transformation, the unsteady Navier-Stokes equations are transformed into a system of ordinary differential equations, which are then solved numerically using a shooting method. The effects of the unsteadiness parameter and the Brownian motion parameter on the flow field and heat transfer characteristics are analyzed and graphically presented. Dual solutions are found to exist for a certain range of the unsteadiness parameter. It is observed that the skin friction coefficient, the Nusselt number and the Sherwood number decrease with increasing values of the unsteadiness parameter. The magnitude of the Nusselt number and the Sherwood number decrease as the Brownian motion parameter increases.

Original languageEnglish
Pages (from-to)509-513
Number of pages5
JournalInternational Journal of Heat and Mass Transfer
Volume68
DOIs
Publication statusPublished - 2014

Fingerprint

Brownian movement
unsteady flow
Unsteady flow
Nusselt number
Heat transfer
Skin friction
Engine cylinders
Ordinary differential equations
Navier Stokes equations
Flow fields
heat transfer
skin friction
Navier-Stokes equation
coefficient of friction
flow distribution
differential equations

Keywords

  • Contracting cylinder
  • Dual solutions
  • Nanofluids
  • Unsteady flow

ASJC Scopus subject areas

  • Mechanical Engineering
  • Condensed Matter Physics
  • Fluid Flow and Transfer Processes

Cite this

Unsteady flow due to a contracting cylinder in a nanofluid using Buongiorno's model. / Zaimi, Khairy; Mohd Ishak, Anuar; Pop, Ioan.

In: International Journal of Heat and Mass Transfer, Vol. 68, 2014, p. 509-513.

Research output: Contribution to journalArticle

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