A solution for the effect of coherent structure on turbulent time-averaged velocity field
Abstract
The Reynolds-decomposition treatment of turbulent flow is refined, applying the theoretical model developed by Yu (1981) to describe instability in shear-flow turbulence. This approach is used to characterize the effects of low-frequency anisotropy on the large eddies; these effects are then added to the mean-flow and fluctuating fields in three-term expressions for the momentary velocity and pressure at any point in the free-shear 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:
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- Computational Fluid Dynamics;
- Flow Stability;
- Shear Flow;
- Turbulent Flow;
- Velocity Distribution;
- Wall Flow;
- Channel Flow;
- Continuity Equation;
- Equations Of Motion;
- Navier-Stokes Equation;
- Reynolds Equation;
- Two Dimensional Boundary Layer;
- Fluid Mechanics and Heat Transfer