Towards a methodology for modeling small structures in turbulent flows
Abstract
Asymptotic techniques are explored for including the sub-grid scale kinetic energy contribution of small eddies into numerical models of turbulent flows. Homogeneous turbulence is assumed to link the stress tensor to the steady-state freestream velocity fields. Methods are defined for limiting the types of data needed to retain the energy contribution, accounting for different length scales of eddie and velocity variations, and coordinating the various time scales concerned. The formulation is similar k-epsilon models, but is limited in application to events which occur on scales below those accessible to simulation.
- Publication:
-
Academie des Sciences Paris Comptes Rendus Serie Sciences Mathematiques
- Pub Date:
- February 1986
- Bibcode:
- 1986CRASM.302..383G
- Keywords:
-
- Computational Fluid Dynamics;
- Turbulent Flow;
- Vortices;
- Asymptotic Methods;
- Flow Distribution;
- K-Epsilon Turbulence Model;
- Reynolds Equation;
- Fluid Mechanics and Heat Transfer