A phenomenological theory of turbulence
Abstract
An equation for turbulent (eddy) viscosity, incorporating convection, diffusion, generation and dissipation is examined. It differs from that suggested by Nee and Kovasznay by a different rate of dissipation of the eddy viscosity. Analytic expressions for turbulent Couette flow and pipe flow at asymptotically-high Re are obtained. The theoretical results are in satisfactory agreement with experimental data. A self-similar solution, describing the decay of eddy viscosity in a plane jet propagating in laminar cocurrent flow of the same velocity, is presented.
- Publication:
-
Fluid Mechanics Soviet Research
- Pub Date:
- April 1978
- Bibcode:
- 1978FlMSR...7..161G
- Keywords:
-
- Eddy Viscosity;
- Flow Characteristics;
- Pipe Flow;
- Turbulent Flow;
- Couette Flow;
- Energy Dissipation;
- Flow Velocity;
- Laminar Flow;
- Reynolds Number;
- Turbulent Jets;
- Velocity Distribution;
- Wall Flow;
- Fluid Mechanics and Heat Transfer