Axisymmetric turbulent jet diffusion near the ground
Abstract
An experimental investigation of isothermal, constant pressure, and incompressible axisymmetric submerged air jets which interact with a parallel smooth plane surface, representing the ground plane, is described. The combined action of the Coanda effect and the presence of the wall are analyzed with reference to free jet axis deflection and the flattening of the flow field. Turbulence intensities were measured. It was determined that the outer part of the mean velocity profiles could be satisfactorily approximated by Townsend's (1947, 1956) predicted profiles for free axisymmetric jet. Reasons for the inability to simplify the treatment of the outer part of the intensity profiles of the wall jet are examined.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- 1973
- Bibcode:
- 1973PhDT.........1W
- Keywords:
-
- Air Jets;
- Axisymmetric Flow;
- Ground Effect (Aerodynamics);
- Jet Impingement;
- Turbulent Diffusion;
- Turbulent Jets;
- Flow Deflection;
- Flow Distribution;
- Flow Theory;
- Free Jets;
- Incompressible Flow;
- Isothermal Flow;
- Velocity Distribution;
- Fluid Mechanics and Heat Transfer