A solution for the effect of coherent structure on turbulent timeaveraged velocity field
Abstract
The Reynoldsdecomposition treatment of turbulent flow is refined, applying the theoretical model developed by Yu (1981) to describe instability in shearflow turbulence. This approach is used to characterize the effects of lowfrequency anisotropy on the large eddies; these effects are then added to the meanflow and fluctuating fields in threeterm expressions for the momentary velocity and pressure at any point in the freeshear turbulence field. The fundamental equations are derived; solutions are obtained by introducing simplifying assumptions; and velocity increments are estimated.
 Publication:

IN: International Conference on Nonlinear Mechanics
 Pub Date:
 1985
 Bibcode:
 1985nlm..conf..826Y
 Keywords:

 Computational Fluid Dynamics;
 Flow Stability;
 Shear Flow;
 Turbulent Flow;
 Velocity Distribution;
 Wall Flow;
 Channel Flow;
 Continuity Equation;
 Equations Of Motion;
 NavierStokes Equation;
 Reynolds Equation;
 Two Dimensional Boundary Layer;
 Fluid Mechanics and Heat Transfer