A SEMI-EMPIRICAL EQUATION FOR THE VISCOSITY OF AIR

Authors
  1. Gottlieb, J.J.
  2. Ritzel, D.V.
Corporate Authors
Defence Research Establishment Suffield, Ralston ALTA (CAN)
Abstract
Sutherland's 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.
Report Number
TN-454 —
Date of publication
15 Jul 1979
Number of Pages
24
DSTKIM No
79-02265
CANDIS No
86613
Format(s):
Document Image stored on Optical Disk;Hardcopy

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