A Semi-Empirical Equation for the Viscosity of Air.

reportActive / Technical Report | Accession Number: ADA072053 | Open PDF

Abstract:

Sutherlands theoretical expression for the absolute or dynamic viscosity of a gas has been modified to represent experimental viscosity data for air. The resulting semi-empirical equation accurately describes measured viscosities of air for temperatures ranging from the boiling point at 78 K to molecular dissociating conditions at 2500 K. Discrepancies between measured values and semi-empirical results rarely exceed 2. Other more limited expressions for the viscosity of air are also compared to measured viscosity data and discussed. Author

Author(s):
Gottlieb, James J. ; Ritzel, David V.
Author Organization(s):
DEFENCE RESEARCH ESTABLISHMENT SUFFIELD RALSTON (ALBERTA)
Descriptive Note:
Technical note,
Pagination:
0023

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
DRES-TN-454
 Subject Terms
Joint Capability Areas:
JCA_3.2_Engagement; JCA_3_Force Application; JCA_3.2.1_Kinetic Means; JCA_6.1.1_Wired Transmission
Communities of Interest:
Materials and Manufacturing Processes
Descriptor(s):
*AIR, *VISCOSITY, THERMAL PROPERTIES, EXPERIMENTAL DATA, COMPARISON, CANADA, MATHEMATICAL PREDICTION
Field(s)/Group(s):
Fluid Mechanics
Report Date:
1979 Jul 01