The prevalence of two-dimensional motion in the turbulent mixing layer
Abstract
A numerical model is defined for an initial value problem for a mixing layer. The velocity components are decomposed into two- and three-dimensional factors, and only a fraction of the large fluctuations arising are linearized. The problem is then reduced to one with only two spatial variables, indicating that the base flow features a quasi-autonomous existence. The base flow, although contributing significant energy to the three-dimensional motions in the flow, is not appreciably altered by the interaction, which also implies that the three-dimensional flow cannot be modeled in terms of simple functions of the base flow components.
- Publication:
-
Journal de Mecanique Theorique et Appliquee Supplement
- Pub Date:
- 1983
- Bibcode:
- 1983JMTAS......147C
- Keywords:
-
- Computational Fluid Dynamics;
- Mixing Layers (Fluids);
- Shear Layers;
- Turbulent Mixing;
- Two Dimensional Flow;
- Boundary Value Problems;
- Errors;
- Finite Difference Theory;
- Kinetic Energy;
- Linearization;
- Three Dimensional Flow;
- Vorticity;
- Fluid Mechanics and Heat Transfer