Wake-shear layer interaction and the onset of turbulence behind a circular cylinder
Abstract
The formation zone of the large regular vortices of the wake of a circular cylinder (X/D is greater than zero and less than 3) in the subcritical regime 2600-60,000 Re(D) is studied with and without the introduction of a splitter plate. Spectral properties are used to describe the different stages of the interaction between shear layer vortices and alternating ones. Physical properties of this interaction are examined separately in a numerical simulation using a pressure-velocity formulation. Both unexcited and excited 2D-plane mixing layers are studied using streakline maps and time traces of the dynamical properties.
- Publication:
-
5th Symposium on Turbulent Shear Flows
- Pub Date:
- 1985
- Bibcode:
- 1985stsf.proc....3K
- Keywords:
-
- Boundary Layer Transition;
- Circular Cylinders;
- Shear Layers;
- Subcritical Flow;
- Turbulent Wakes;
- Vortices;
- Computational Fluid Dynamics;
- Flow Stability;
- High Reynolds Number;
- Interactional Aerodynamics;
- Mixing Layers (Fluids);
- Turbulent Mixing;
- Two Dimensional Flow;
- Vortex Shedding;
- Fluid Mechanics and Heat Transfer