MIXED CONVECTION HEAT TRANSFER FROM A PARTICLE IN SUPERCRITICAL WATER

Abstract

This paper aims to study a steady laminar convection flow over a spherical particle in supercritical water in pseudo-critical zone. Forced convection, free convection, assisting convection, and opposing convection from a spherical particle in supercritical water (SCW) were studied based on a numerical model fully accounting for variations of thermo-physical properties in pseudo-critical zone. Variation of specific heat plays a main role in determination of heat transfer coefficient. The gravity direction has a remarkable effect on heat transfer. Quantitative relationship between variable properties and Nusselt number has been established based on the simulation results.

Keywords

Dates

  • Submission Date2013-11-03
  • Revision Date2014-01-20
  • Acceptance Date2014-03-03
  • Online Date2014-04-05

DOI Reference

10.2298/TSCI131103038W

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