Accession Number:

AD0672574

Title:

ON A GENERAL SIMILARITY ANALYSIS FOR TURBULENT JET AND WAKE FLOWS,

Descriptive Note:

Corporate Author:

IOWA UNIV IOWA CITY INST OF HYDRAULIC RESEARCH

Personal Author(s):

• Naudascher,Eduard

Report Date:

1967-12-01

Pagination or Media Count:

50.0

Abstract:

The development of any inhomogeneous free-turbulence flow in an incompressible fluid is predicted through the use of a general self-preservation hypothesis. The analytical solutions are verified by comparison with experimental data on mean-flow and turbulence characteristics of plane and axisymmetric jets in coaxial parallel flow with and without confinement, of an axisymmetric jet in a cross flow, and of the wake behind a self-propelled body. Emphasis is placed on the distinct turbulence structure of the various flows as revealed by the different axial variations of a shear parameter relating turbulence shear to mean velocity. The satisfactory predictions obtained by the new approach make it appear to have a more general application e.g., to plumes and wall jets than the examples chosen might imply. Author

Descriptors:

• *TURBULENCE
• *JET FLOW
• TURBULENCE
• WAKE
• FLOW FIELDS
• EQUATIONS OF MOTION
• WALLS
• ENERGY
• MATHEMATICAL ANALYSIS
• AXISYMMETRIC FLOW

Subject Categories:

• Aerodynamics
• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE