Accession Number : AD0605875

Title :   BOUNDARY LAYER EQUATIONS AND BOUNDARY CONDITIONS FOR THEM IN THE CASE OF MOTION IN A SLIGHTLY RAREFIED GAS WITH SUPERSONIC SPEEDS,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Lun'kin,Yu. P.

Report Date : 16 JAN 1964

Pagination or Media Count : 1

Abstract : By using Prandtl's boundary-layer theory, equations are derived for a moderately rarefied gas which differ from the ordinary Prandtl equations by the presence of supplementary terms that contain higher derivatives of velocity and temperature; in the equations derived, the normal pressure gradient differs from zero and is expressed by supplementary terms. The boundary conditions for these equations are found with the aid of kinetic theory; they are a generalization of Maxwell's and Smoluchowski's conditions for motion at a supersonic velocity. The velocity and height limits of applicability of the equations derived are set forth. (Author)

Descriptors :   (*TURBULENT BOUNDARY LAYER, SUPERSONIC CHARACTERISTICS), (*BOUNDARY LAYER, EQUATIONS), (*SUPERSONIC CHARACTERISTICS, GAS FLOW), TURBULENCE, PRESSURE, FLUID MECHANICS, RAREFIED GAS DYNAMICS, MOLECULAR PROPERTIES, MATHEMATICAL ANALYSIS, PARTIAL DIFFERENTIAL EQUATIONS, KINETIC THEORY, SUPERSONIC FLOW, MOTION, USSR

Distribution Statement : APPROVED FOR PUBLIC RELEASE