Accession Number : AD0755889

Title :   Investigation of Turbulence: Equations for Compressible Gas, Space-Time Correlations in a Boundary Layer.

Descriptive Note : Scientific rept. no. 8 (Final), 1 Jan 67-31 Jan 72,

Corporate Author : AIX-MARSEILLE UNIV (FRANCE) INSTITUT DE MECANIQUE STATISTIQUE DE LA TURBULENCE

Personal Author(s) : Favre,Alexandre J.

Report Date : FEB 1972

Pagination or Media Count : 12

Abstract : Statistical equations for a turbulent compressible gas are given: (a) in a generalized form, the complete definitions of the non-random parts of the turbulent quantities being kept free for a later stage; (b) in the conventional form, the non-random parts being defined by the mean values of the turbulent quantities; and (c) in a form which is much simpler for mathematical treatment and physical meaning, where the non-random parts of the extensive turbulent quantities are defined by the mean mass-weighted values. Space-time correlations in a subsonic turbulent boundary layer without and with heat transfer have been measured. Triple correlations of velocities are especially significant of the structure of large scale fluctuations. (Author)

Descriptors :   (*COMPRESSIBLE FLOW, TURBULENCE), EQUATIONS, HEAT TRANSFER, VELOCITY, CORRELATION TECHNIQUES, SPECIFIC HEAT, TURBULENT BOUNDARY LAYER, SUBSONIC FLOW, FRANCE

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE