Accession Number : AD0701091

Title :   WALL TURBULENCE.

Descriptive Note : Final scientific rept. 1 Oct 68-30 Sep 69,

Corporate Author : TEL-AVIV UNIV (ISRAEL) DEPT OF ENVIRONMENTAL SCIENCES

Personal Author(s) : Kleinstein,Gdalia

Report Date : 08 OCT 1969

Pagination or Media Count : 8

Abstract : A theoretical investigation of the mean properties of a fully developed turbulent pipe flow was carried out. The analysis was divided into three phases: the wall region, the core region, and the matching procedure. In the wall region the generalized eddy viscosity of Kleinstein (AIAA Journal, Vol. 5, No. 8, 1967) was applied and led to good agreement with experimental data for velocity distribution, turbulent distribution and energy dissipation functions. In the core region an eddy viscosity model was derived and led to good agreement when compared with experimental data for velocity defect law. Energy dissipation functions in this region fall below the experimental data. The matching of the region resulted in a complete description of the flow field in a pipe and in particular led to a friction law. (Author)

Descriptors :   (*PIPES, *TURBULENCE), WALLS, DISTRIBUTION, ENERGY, FLOW FIELDS, SKIN FRICTION, ISRAEL

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE