Mixed convection boundary layer flow near the lower stagnation point of an isothermal solid sphere in a nanofluid

Leony Tham, Roslinda Mohd. Nazar, Ioan Pop

Research output: Contribution to journalArticle

Abstract

In this paper, the problem of steady mixed convection boundary layer flow in a nanofluid near the lower stagnation point of a solid sphere in a stream flowing vertically upwards has been studied for both cases of heated and cooled spheres. The resulting system of nonlinear partial differential equations is solved numerically using an efficient implicit finite-difference scheme known as the Keller-Box method. Three different types of nanoparticles considered are copper Cu, alumina Al2O3 and titania TiO2 by using water-based fluid with Prandtl number at 6.2. Numerical solutions are obtained for the velocity and temperature profiles with various values of the nanoparticle volume fraction φ{symbol} and the mixed convection parameter λ.

Original languageEnglish
Pages (from-to)195-209
Number of pages15
JournalJP Journal of Heat and Mass Transfer
Volume7
Issue number2
Publication statusPublished - May 2013

Fingerprint

boundary layer flow
stagnation point
convection
nanoparticles
Prandtl number
partial differential equations
temperature profiles
boxes
aluminum oxides
titanium
velocity distribution
copper
fluids
water

Keywords

  • Boundary layer
  • Lower stagnation point
  • Mixed convection
  • Nanofluid
  • Numerical solution
  • Solid sphere

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Mixed convection boundary layer flow near the lower stagnation point of an isothermal solid sphere in a nanofluid. / Tham, Leony; Mohd. Nazar, Roslinda; Pop, Ioan.

In: JP Journal of Heat and Mass Transfer, Vol. 7, No. 2, 05.2013, p. 195-209.

Research output: Contribution to journalArticle

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