期刊
THERMAL SCIENCE
卷 20, 期 2, 页码 483-492出版社
VINCA INST NUCLEAR SCI
DOI: 10.2298/TSCI131103038W
关键词
heat transfer; spherical particle; mixed convection; supercritical water
资金
- National Natural Science Foundation of China [50906069]
- National Excellent 100 Doctoral Dissertation [201151]
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 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.
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