Stagnation-point flow over a permeable stretching/shrinking sheet in a copper-water nanofluid

Norfifah Bachok, Anuar Mohd Ishak, Roslinda Mohd. Nazar, Norazak Senu

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

An analysis is carried out to study the heat transfer characteristics of steady two-dimensional stagnation-point flow of a copper (Cu)-water nanofluid over a permeable stretching/shrinking sheet. The stretching/shrinking velocity and the ambient fluid velocity are assumed to vary linearly with the distance from the stagnation-point. Results for the skin friction coefficient, local Nusselt number, velocity as well as the temperature profiles are presented for different values of the governing parameters. It is found that dual solutions exist for the shrinking case, while for the stretching case, the solution is unique. The results indicate that the inclusion of nanoparticles into the base fluid produces an increase in the skin friction coefficient and the heat transfer rate at the surface. Moreover, suction increases the surface shear stress and in consequence increases the heat transfer rate at the fluid-solid interface.

Original languageEnglish
Article number39
JournalBoundary Value Problems
Volume2013
DOIs
Publication statusPublished - 2013

Fingerprint

Stagnation Point Flow
Nanofluid
Shrinking
Copper
Heat Transfer
Skin Friction
Friction Coefficient
Water
Fluid
Dual Solutions
Stagnation Point
Nusselt number
Temperature Profile
Suction
Shear Stress
Nanoparticles
Inclusion
Linearly
Vary

Keywords

  • Dual solutions
  • Heat transfer
  • Nanofluid
  • Stagnation-point
  • Stretching/shrinking sheet
  • Suction/injection

ASJC Scopus subject areas

  • Algebra and Number Theory
  • Analysis

Cite this

Stagnation-point flow over a permeable stretching/shrinking sheet in a copper-water nanofluid. / Bachok, Norfifah; Mohd Ishak, Anuar; Mohd. Nazar, Roslinda; Senu, Norazak.

In: Boundary Value Problems, Vol. 2013, 39, 2013.

Research output: Contribution to journalArticle

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