Boundary layer stagnation-point flow toward a stretching/shrinking sheet in a nanofluid

Norfifah Bachok, Anuar Mohd Ishak, Ioan Pop

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

An analysis is carried out to study the steady two-dimensional stagnation-point flow of a nanofluid over a stretching/shrinking sheet in its own plane. The stretching/shrinking velocity and the ambient fluid velocity are assumed to vary linearly with the distance from the stagnation point. The model used for the nanofluid incorporates the effects of Brownian motion and thermophoresis. A similarity solution is presented which depends on the Prandtl number Pr, Lewis number Le, Brownian motion parameter Nb and thermophoresis parameter Nt. It is found that the local Nusselt number is a decreasing function, while the local Sherwood number is an increasing function of each parameters Pr, Le, Nb, and Nt. Different from a stretching sheet, the solutions for a shrinking sheet are nonunique.

Original languageEnglish
Article number054501
JournalJournal of Heat Transfer
Volume135
Issue number5
DOIs
Publication statusPublished - 2013

Fingerprint

stagnation point
Thermophoresis
thermophoresis
Stretching
boundary layers
Boundary layers
Brownian movement
Lewis numbers
Prandtl number
Nusselt number
Fluids
fluids

Keywords

  • Dual solutions
  • Heat transfer
  • Nanofluids
  • Stagnation-point flow
  • Stretching/shrinking sheet

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Boundary layer stagnation-point flow toward a stretching/shrinking sheet in a nanofluid. / Bachok, Norfifah; Mohd Ishak, Anuar; Pop, Ioan.

In: Journal of Heat Transfer, Vol. 135, No. 5, 054501, 2013.

Research output: Contribution to journalArticle

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