Critical examination of two-equation turbulence closure models
Abstract
Comparison of the Jones-Launder, Ng-Spalding, Saffman-Wilcox, and Wilcox-Traci two-equation turbulence models has been conducted. It was shown that the Saffman-Wilcox and Wilcox-Traci dissipation-rate formulations admit straightforward integration through the viscous sublayer, whereas integration through the viscous sublayer is a more difficult issue with the Jones-Launder dissipation-function and the Ng-Spalding length-scale formulations. Numerical computations were conducted in which the models were applied to four equilibrium boundary layer flows including adverse, zero, and favorable pressure gradients. Computations of zero pressure gradient flow over a convex wall composed the final part of the comparison.
- Publication:
-
9th Fluid and Plasma Dynamics Conference
- Pub Date:
- July 1976
- Bibcode:
- 1976fpdy.confS....C
- Keywords:
-
- Boundary Layer Flow;
- Closure Law;
- Flow Equations;
- Mathematical Models;
- Turbulence Models;
- Turbulent Flow;
- Viscous Flow;
- Energy Dissipation;
- Equilibrium Flow;
- Flow Theory;
- Pressure Gradients;
- Stratified Flow;
- Fluid Mechanics and Heat Transfer