Boundary layer flow and heat transfer over an unsteady stretching vertical surface

Research output: Contribution to journalArticle

111 Citations (Scopus)

Abstract

The solution to the unsteady mixed convection boundary layer flow and heat transfer problem due to a stretching vertical surface is presented in this paper. The unsteadiness in the flow and temperature fields is caused by the time-dependent of the stretching velocity and the surface temperature. The governing partial differential equations with three independent variables are first transformed into ordinary differential equations, before they are solved numerically by a finite-difference scheme. The effects of the unsteadiness parameter, buoyancy parameter and Prandtl number on the flow and heat transfer characteristics are thoroughly examined. Both assisting and opposing buoyant flows are considered. It is observed that for assisting flow, the solutions exist for all values of buoyancy parameter, whereas for opposing flow, they exist only if the magnitude of the buoyancy parameter is small. Comparison with known results for steady-state flow is excellent.

Original languageEnglish
Pages (from-to)369-375
Number of pages7
JournalMeccanica
Volume44
Issue number4
DOIs
Publication statusPublished - Aug 2009

Fingerprint

boundary layer flow
Boundary layer flow
Buoyancy
Stretching
heat transfer
Heat transfer
buoyancy
Mixed convection
Prandtl number
Ordinary differential equations
Partial differential equations
Flow fields
Temperature distribution
equilibrium flow
partial differential equations
surface temperature
flow distribution
temperature distribution
convection
differential equations

Keywords

  • Fluids mechanics
  • Heat transfer
  • Mixed convection
  • Stretching sheet
  • Unsteady flow

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Condensed Matter Physics

Cite this

Boundary layer flow and heat transfer over an unsteady stretching vertical surface. / Mohd Ishak, Anuar; Mohd. Nazar, Roslinda; Pop, Ioan.

In: Meccanica, Vol. 44, No. 4, 08.2009, p. 369-375.

Research output: Contribution to journalArticle

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