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A wavelet-based multiresolution approach to large-eddy simulation of turbulence
- Source :
-
Journal of Computational Physics . Oct2010, Vol. 229 Issue 20, p7715-7738. 24p. - Publication Year :
- 2010
-
Abstract
- Abstract: The wavelet-based multiresolution analysis (MRA) technique is used to develop a modelling approach to large-eddy simulation (LES) and its associated subgrid closure problem. The LES equations are derived by projecting the Navier–Stokes (N–S) equations onto a hierarchy of wavelet spaces. A numerical framework is then developed for the solution of the large and the small-scale equations. This is done in one dimension, for the Burgers equation, and in three dimensions, for the N–S problem. The proposed methodology is assessed in a priori tests on an atmospheric turbulent time series and on data from direct numerical simulation. A posteriori (dynamic) tests are also carried out for decaying and force-driven Burgers turbulence. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00219991
- Volume :
- 229
- Issue :
- 20
- Database :
- Academic Search Index
- Journal :
- Journal of Computational Physics
- Publication Type :
- Academic Journal
- Accession number :
- 52907383
- Full Text :
- https://doi.org/10.1016/j.jcp.2010.06.027