Viscosity of Helium, Argon, and Nitrogen as a Function of Density
Abstract
The paper presents the results of new, precise measurements of the viscosity of nitrogen, argon, and helium at 25C. The measurements were performed over a nominal range of pressures 1-100 atm and at very closely spaced density intervals. The data were subjected to a stringent statistical analysis in order to determine whether the density expansion consists of a pure polynomial or whether a term of the form 2ln must be included in it. The existence of such a term was discovered theoretically by several investigators. The analysis indicates that if such a term exists, its factor must be very small. This result is interpreted as indicating that correlations which extend over distances of the order of a mean free path are negligible when compared with correlations which extend over distances of the order of the range of molecular interactions.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1971
- Accession Number
- AD0729783
Entities
People
- E. Paykoc
- J. Kestin
- J. V. Sengers
Organizations
- University of Maryland