Buoyancy-driven heat transfer in nanofluid-filled trapezoidal enclosure with variable thermal conductivity and viscosity

R. Roslan, H. Saleh, Ishak Hashim

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

Heat transfer performance utilizing nanofluids in a trapezoidal enclosure is investigated taking into account variable thermal conductivity and viscosity. Transport equations are modelled by a stream-vorticity formulation, and are solved numerically by the finite difference method. The effects of the Rayleigh number, base angle, volume fraction, and size of nanoparticles on flow and temperature patterns as well as the heat transfer rate are presented. We found that the effect of the viscosity was more dominant than the thermal conductivity, and there is almost no improvement in heat transfer performance utilizing nanofluids.

Original languageEnglish
Pages (from-to)867-882
Number of pages16
JournalNumerical Heat Transfer; Part A: Applications
Volume60
Issue number10
DOIs
Publication statusPublished - 15 Nov 2011

Fingerprint

Nanofluid
Buoyancy
Enclosure
enclosure
Thermal Conductivity
Enclosures
buoyancy
Heat Transfer
Thermal conductivity
Viscosity
thermal conductivity
heat transfer
viscosity
Heat transfer
Rayleigh number
Vorticity
Transport Equation
Volume Fraction
Finite difference method
vorticity

ASJC Scopus subject areas

  • Numerical Analysis
  • Condensed Matter Physics

Cite this

Buoyancy-driven heat transfer in nanofluid-filled trapezoidal enclosure with variable thermal conductivity and viscosity. / Roslan, R.; Saleh, H.; Hashim, Ishak.

In: Numerical Heat Transfer; Part A: Applications, Vol. 60, No. 10, 15.11.2011, p. 867-882.

Research output: Contribution to journalArticle

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