Towards implicit subgrid-scale modeling by particle methods
Langue
en
Article de revue
Ce document a été publié dans
ESAIM: Proceedings. 2007-03-02, vol. 16, p. 77-88
EDP Sciences
Résumé en anglais
The numerical truncation error of vortex-in-cell methods is analyzed a-posteriori through the effective spectral numerical viscosity for simulations of three-dimensional isotropic turbulence. The interpolation kernels used ...Lire la suite >
The numerical truncation error of vortex-in-cell methods is analyzed a-posteriori through the effective spectral numerical viscosity for simulations of three-dimensional isotropic turbulence. The interpolation kernels used for velocity-smoothing and re-meshing are identified as the most relevant components affecting the shape of the spectral numerical viscosity as a function of wave number. A linear combination of well-known standard kernels leads to new kernels assigned to the specific use for implicit large-eddy simulation of turbulent flows, i.e. their truncation errors acts as subgrid- scale model. Numerical results are provided to show the potential and drawbacks of the approach.< Réduire
Mots clés en anglais
vortex methods
implicit large-eddy simulation
subgrid-scale modeling
Origine
Importé de halUnités de recherche