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Computational Thermal Sciences: An International Journal
ESCI SJR: 0.249 SNIP: 0.434 CiteScore™: 1.4

ISSN Druckformat: 1940-2503
ISSN Online: 1940-2554

Computational Thermal Sciences: An International Journal

DOI: 10.1615/ComputThermalScien.2015014473
pages 375-384

NUMERICAL STUDY ON FLOW AND CONVECTIVE HEAT TRANSFER OF AVIATION KEROSENE IN A VERTICAL MINITUBE AT SUPERCRITICAL PRESSURES

Dan Huang
Department of Energy Sciences, Lund University, Box 118, Lund SE-22100, Sweden; Department of Energy Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China
Zan Wu
Department of Energy Sciences, Lund University, P.O. Box 118, Lund, SE-22100, Sweden
Bengt Sunden
Division of Heat Transfer, Department of Energy Sciences, Lund University, P.O. Box 118, SE-22100, Lund, Sweden

ABSTRAKT

Convective heat transfer of aviation kerosene at supercritical pressures in a vertical upward tube with inner diameter 1.8 mm was numerically studied using the renormalization group k−ε turbulence model with enhanced wall treatment. The thermophysical and transport properties of the aviation kerosene at various temperatures were obtained by a 10-species surrogate and the NIST SUPERTRAPP software. The grid independence was first studied and numerical results were then compared with experimental data for validation. Effects of mass flow rate, heat flux, pressure, and inlet temperature on the heat transfer performance were investigated. Under flow conditions given in this work, the results show that the heat transfer coefficient increases with mass flow rate, heat flux, or inlet temperature, while an increase in inlet pressure reduces the heat transfer coefficient. The buoyancy force has little effect on heat transfer.


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