Accession Number:

AD0478179

Title:

DYNAMICAL SIMILARITIES IN RAREFIELD GAS FLOWS.

Descriptive Note:

Interim rept.,

Corporate Author:

POLYTECHNIC INST OF BROOKLYN N Y DEPT OF AEROSPACE ENGINEERING AND APPLIED MECHANICS

Personal Author(s):

• Koga,Toyoki

Report Date:

1966-01-01

Pagination or Media Count:

12.0

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

Descriptors:

• (*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

Subject Categories:

• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE