Instabilities and turbulence
Abstract
This paper gives an overview of recent numerical studies of transition and turbulence in incompressible shear flows. The features of a three-dimensional instability that seems to be responsible for the early stages of transition in planar shear flows are summarized, and some new results on the simulation of turbulent spots in a channel flow and some new ideas on the role of viscosity in producing small-scale structures in turbulent flows are described. Finally, the problem of representing the effects of subgrid-scale motions in large-eddy simulations of turbulence is discussed.
- Publication:
-
Turbulence and Chaotic Phenomena in Fluids
- Pub Date:
- 1984
- Bibcode:
- 1984tcpf.proc...73O
- Keywords:
-
- Channel Flow;
- Flow Stability;
- Incompressible Flow;
- Shear Flow;
- Transition Flow;
- Turbulent Flow;
- Computational Fluid Dynamics;
- Computerized Simulation;
- Nonlinear Equations;
- Three Dimensional Flow;
- Traveling Waves;
- Two Dimensional Flow;
- Vortices;
- Fluid Mechanics and Heat Transfer