Affordable Access

Towards implicit subgrid-scale modeling by particle methods

Authors
  • Hickel, Stefan
  • Weynans, Lisl
  • Adams, Nikolas A.
  • Cottet, Georges-Henri
Publication Date
Mar 02, 2007
Source
HAL-ENAC
Keywords
Language
English
License
Unknown
External links

Abstract

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.

Report this publication

Statistics

Seen <100 times