The prevalence of twodimensional 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 threedimensional 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 quasiautonomous existence. The base flow, although contributing significant energy to the threedimensional motions in the flow, is not appreciably altered by the interaction, which also implies that the threedimensional 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