ENHANCEMENT OF NATURAL CONVECTION HEAT TRANSFER IN A U-SHAPED CAVITY FILLED WITH AL2O3-WATER NANOFLUID

Abstract

This paper investigates the natural convection heat transfer enhancement of l2O3-water nanofluid in a U-shaped cavity. In performing the analysis, the governing quations are modeled using the Boussinesq approximation and are olved numerically using the finite-volume numerical method. The study examines he effects of the nanoparticle volume fraction, the Rayleigh number and he geometry parameters on the mean Nusselt number. The results show that for ll values of the Rayleigh number, the mean Nusselt number increases as the volume raction of nanoparticles increases. In addition, it is shown that for a given ength of the heated wall, extending the length of the cooled wall can improve the eat transfer performance.

Keywords

Dates

  • Submission Date2012-08-13
  • Revision Date2012-09-03
  • Acceptance Date2012-09-12

DOI Reference

10.2298/TSCI1205317C

References

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