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 : JAN 1966

Pagination or Media Count : 12

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