AN EXPERIMENTAL DETERMINATION OF THE DYNAMIC VISCOSITY OF ATMOSPHERIC ARGON FROM 3500 TO 8500 DEGREES KELVIN,
Abstract
A direct-current wall-stabilized arc, constrained to the axis of a precision-bore Vycor tube, was employed for the determination of the dynamic viscosity mu (T sub g) of argon at atmospheric pressure over the heavy-particle temperature range 3500 < or = T sub g < or = 8500K. It was found that except for a slightly elevated electron temperature, the arc could be expected to operate in local thermal equilibrium (LTE) along the arc axis. Spectroscopic measurements gave an electron temperature of 9300K along the axis. Allowing for kinetic non-equilibrium, the heavy-particle temperature along the axis was calculated to be 9020 plus or minus 150K. The T sub g(r) profile was found to be consistent with other arc parameters which could be measured experimentally, in particular, the total mass flow and the total arc current. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1968
- Accession Number
- AD0670530
Entities
People
- Daniel P. Aeschliman
Organizations
- Northwestern University