Building proper invariants for eddy-viscosity subgrid-scale models

A dynamic global-coefficient subgrid-scale eddy-viscosity model for large-eddy simulation in complex geometries

Numerical Analysis of a Subgrid Scale Eddy Viscosity Method for Higher Reynolds Number Flow Problems

We develop a variationally consistent eddy viscosity model, given by [18] for convection diffusion equation, for the Navier-Stokes equations. We also prove that the new model is equivalent to a variational multiscale method. The new method removes the restriction that the fluctuations are quasi-stationary. We then give a complete error analysis. The error analysis is optimal and uniform in Reyn...

Large - eddy simulation with dynamic SGS models 1 Large - eddy simulation with dynamic subgrid - scale modelsM

Diierent dynamic subgrid scale models, viz. the dynamic model of Germano et al. are evaluated by means of a priori tests. Direct numerical simulation data for fully-developed turbulent and transitional incompressible ows are used. Low correlation is obtained between exact and modeled subgrid scale stresses with the DSM. Conversely, good agreement is found for both the DMM and the DTM, since tho...

Can the dynamic eddy-viscosity class of subgrid-scale models capture inertial- range properties of Burgers turbulence?

A new subgrid eddy-viscosity model for large-eddy simulation of anisotropic turbulence

A new subgrid eddy-viscosity model is proposed in this paper. Full details of the derivation of the model are given with the assumption of homogeneous turbulence. The formulation of the model is based on the dynamic equation of the structure function of resolved scale turbulence. By means of the local volume average, the effect of the anisotropy is taken into account in the generalized Kolmogor...