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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
PAPER SUBMITTED: 2013-11-03
PAPER REVISED: 2014-01-20
PAPER ACCEPTED: 2014-03-03
PUBLISHED ONLINE: 2014-04-05
DOI REFERENCE: https://doi.org/10.2298/TSCI131103038W
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2016, VOLUME 20, ISSUE 2, PAGES [483 - 492]
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