Title :
Transport coefficients of helium and argon-helium plasmas
Author :
Murphy, Anthony B.
Author_Institution :
CSIRO Telecommun. & Ind. Phys., Lindfield, NSW, Australia
fDate :
10/1/1997 12:00:00 AM
Abstract :
Calculated values of the viscosity, thermal conductivity, and electrical conductivity of helium, and mixtures of argon and helium, at high temperatures are presented. In addition, combined ordinary, pressure, and thermal diffusion coefficients are given for the mixtures. The calculations, which assume local thermodynamic equilibrium, are performed for atmospheric pressure plasmas in the temperature range from 300 to 30000 K. The results are compared with those of previously published studies. Significant discrepancies are found; these are attributed to the improved values of the collision integrals used here in calculating the transport coefficients
Keywords :
argon; helium; plasma transport processes; thermal conductivity; thermal diffusion; viscosity; 1 atm; 300 to 30000 K; Ar-He plasmas; He; He plasmas; He-Ar; atmospheric pressure; electrical conductivity; high temperature; local thermodynamic equilibrium; pressure coefficients; thermal conductivity; thermal diffusion coefficients; transport coefficients; viscosity; Argon; Atmospheric-pressure plasmas; Helium; Plasma properties; Plasma temperature; Plasma transport processes; Plasma welding; Thermal conductivity; Uncertainty; Viscosity;
Journal_Title :
Plasma Science, IEEE Transactions on
