Model of low-Reynolds-number wall turbulence for equilibrium layers
Abstract
The present one-equation turbulence model for simulation of the wall turbulence region at low Reynolds numbers is applied to equilibrium boundary layers in which a universal mixing length distribution can be assumed, as indicated by the experimental results of East and Sawyer (1979). Attention is given to the accurate representation of the turbulence-energy balance in the viscous and buffer regions, where an explicit model of the pressure-work term is shown to be necessary. Comparisons are made with experimental results for the mean quantities in the near-wall region. The free stream pressure gradient influences the mean quantities and the turbulence energy balance in a way that agrees with experimental results.
- Publication:
-
IN: Recent advances in the aerospace sciences (A85-47304 23-31). New York
- Pub Date:
- 1985
- Bibcode:
- 1985raas.book..139O
- Keywords:
-
- Computational Fluid Dynamics;
- Equilibrium Flow;
- Low Reynolds Number;
- Turbulence Models;
- Turbulent Boundary Layer;
- Wall Flow;
- Coordinate Transformations;
- Eddy Viscosity;
- Mixing Length Flow Theory;
- Reynolds Stress;
- Turbulent Diffusion;
- Fluid Mechanics and Heat Transfer