Heat transfer to a particle under plasma conditions with vapor contamination from the particle

Journal Article · Sat Jun 01 00:00:00 EDT 1985 · Plasma Chem. Plasma Process.; (United States)

DOI:https://doi.org/10.1007/BF00566210· OSTI ID:5350839

Chen, X; Chyou, Y P; Lee, Y C; Pfender, E

Heat transfer to a copper particle immersed into an argon plasma is considered in this paper, including the effects of contamination of the plasma (transport coefficients) by copper vapor from the particle. Except for cases of high plasma temperatures, the vapor content in the plasma is shown to have a considerable influence on heat transfer to a nonevaporating particle, and, to a lesser extent, on heat transfer to an evaporating particle. Evaporation itself reduces heat transfer to a particle substantially as shown in a previous paper (Xi Chen and E. Pfender, Plasma Chem. Plasma Process., 2, 185 (1982)). Comparisons of the calculated results with those based on a method suggested in the above reference show that the simplified assumptions employed, i.e., that the surface temperature is equal to the boilingpoint and that plasma properties based on a fixed composition are applicable, can be employed to simplify calculations for many cases. This study reveals that a considerable portion of a particle must be vaporized before a steady concentration distribution is established around the particle.

• Research Organization: Tsinghva Univ., Beijing
• OSTI ID: 5350839
• Journal Information: Plasma Chem. Plasma Process.; (United States), Vol. 5:2
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER
CHAPMAN-ENSKOG THEORY
EVAPORATION
HEAT TRANSFER
IONIZATION
MASS TRANSFER
VAPORS
CONTAMINATION
ARGON
BOILING POINTS
ELECTRON DENSITY
IONIZATION POTENTIAL
LTE
MATHEMATICAL MODELS
PLASMA
PLASMA ARC SPRAYING
POWDERS
TEMPERATURE DEPENDENCE
THERMAL CONDUCTIVITY
THERMODYNAMICS
DEPOSITION
ELEMENTS
ENERGY TRANSFER
EQUILIBRIUM
FLUIDS
GASES
METALS
NONMETALS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
RARE GASES
SPRAY COATING
SURFACE COATING
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENTS
TRANSITION TEMPERATURE
360104* - Metals & Alloys- Physical Properties
360101 - Metals & Alloys- Preparation & Fabrication