DYNAMICAL SIMILARITIES IN RAREFIELD GAS FLOWS.

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Abstract:

Analyzing the procedure of the Enskog-Chapman method deriving the Navier-Stokes equation, the criterion is obtained of the validity of the Navier-Stokes equation. It is shown that the Knudsen number constitutes a part of the criterion. In view of the criterion, flow regimes are proposed to be redefined. The conditions of the applicability of the Navier-Stokes equation to shock wave and Couette flow are studied in view of the above criterion. It is suggested that there is a possibility of revision of the slip flow theory by which the application of the Navier-Stokes equation becomes more radical in some rarefied gas flows. Author

Author(s):
Koga, Toyoki
Author Organization(s):
POLYTECHNIC INST OF BROOKLYN N Y DEPT OF AEROSPACE ENGINEERING AND APPLIED MECHANICS
Descriptive Note:
Interim rept.,
Annotation:
Dynamical similarities in rarefied gas flows.
Pagination:
0012

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
PIBAL-964
Contract/Grant Number(s):
Nonr-839(38), ARPA Order-529
 Subject Terms
Joint Capability Areas:
JCA_3.2_Engagement; JCA_3_Force Application
Communities of Interest:
No COI(s) Identified
Descriptor(s):
(*AERODYNAMICS, GAS FLOW), THEORY, COUETTE FLOW, SHOCK WAVES, THEORY, MATHEMATICAL ANALYSIS, FLUID MECHANICS, KNUDSEN NUMBER, PARTIAL DIFFERENTIAL EQUATIONS, RAREFIED GAS DYNAMICS, FLOW FIELDS, DENSITY, SHEAR STRESSES, WALLS
Field(s)/Group(s):
Fluid Mechanics
Keyword(s):
RAREFIED GAS DYNAMICS
Report Date:
1965 Jan 01