WIT Press


Tensorial Definition Of The Eddy Viscosity In Large Eddy Simulation Of Turbulent Flows

Price

Free (open access)

Paper DOI

10.2495/HY980551

Volume

26

Pages

10

Published

1998

Size

904 kb

Copyright

WIT Press

Author(s)

F. Gallerano & E. Napoli

Abstract

A new model for the Sub-Grid Scale turbulent stress in the Large Eddy Simulation is proposed, that is based on the definition in tensorial terms of the eddy viscosity. The model employs the Germano identity in order to dynamically evaluating the single required input coefficient and it thus doesn't need any empirical calibration. The eddy viscosity tensorial expression is deduced by removing the widely used isotropy assumption of the high-frequency viscous dissipation. In the paper, the filtered Navier-Stokes equations are discretized on a non- staggered grid using a finite-volume ap

Keywords