Nusselt number correlations for heat transfer to small spheres in thermal plasma flows

Journal Article · Mon Jun 01 00:00:00 EDT 1987 · Plasma Chem. Plasma Process.; (United States)

DOI:https://doi.org/10.1007/BF01019179· OSTI ID:6412070

Young, R M; Pfender, E

Seven different equations predicting heat transfer rates to small spheres in plasma flows are examined considering argon and nitrogan as plasma gases from 300 to 21,000 K at 1 atm. For argon there is a general consensus up to 9000 K, beyond which wide deviations in behavior occur. For nitrogen, the seven correlations are in good agreement up to 4000 K, bus show substantial deviations beyond this value. Comparisons with the sparsely available experimental data are made for argon from 300 to 17,000 K and for nitrogen up to 5500 K. Disagreement between the various correlations and experiment can exceed one order of magnitude.

• Research Organization: Univ. of Minnesota, Minneapolis
• DOE Contract Number: FG02-85ER13433
• OSTI ID: 6412070
• Journal Information: Plasma Chem. Plasma Process.; (United States), Vol. 7:2
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
HOT PLASMA
HEAT TRANSFER
NUSSELT NUMBER
POWDERS
ARGON IONS
CORRELATIONS
EQUATIONS
GAS FLOW
MATHEMATICAL MODELS
NITROGEN IONS
PLASMA SIMULATION
PRANDTL NUMBER
REYNOLDS NUMBER
THERMAL CONDUCTIVITY
ULTRAHIGH TEMPERATURE
VERY HIGH TEMPERATURE
CHARGED PARTICLES
ENERGY TRANSFER
FLUID FLOW
IONS
PHYSICAL PROPERTIES
PLASMA
SIMULATION
THERMODYNAMIC PROPERTIES
400800* - Combustion
Pyrolysis
& High-Temperature Chemistry