A new theory to solve turbulent vortices in flowing fluids
Abstract
Turbulent vortices occur everywhere in flowing fluids and possess the properties of dissipation and dispersion. A set of new control equations is presented featuring the interaction between dissipation and dispersion of turbulence. By analysis of instability the rate of turbulent energy production is established. Two third-order derivative momentum equations are derived, one for weak and the other for strong vorticity. By means of this new theory, various turbulent flow problems can be solved, such as energe inversion in the vortex tail behind a bluff body, the coherent horseshoe vortices in a turbulent boundary layer, the delay in cascading down of turbulent energy through the spectrum, anisotropy of turbulence intensities, etc. Two computational examples are presented.
- Publication:
-
Fluid-Structure Interaction and Aerodynamics Damping
- Pub Date:
- September 1985
- Bibcode:
- 1985asme.confQ....H
- Keywords:
-
- Computational Fluid Dynamics;
- Fluid Flow;
- Incompressible Flow;
- Turbulent Boundary Layer;
- Turbulent Flow;
- Vortices;
- Laminar Flow;
- Momentum Theory;
- Navier-Stokes Equation;
- Reynolds Number;
- Fluid Mechanics and Heat Transfer