Subgrid length-scales for large-eddy simulation of stratified turbulence
β Scribed by Ulrich Schumann
- Publisher
- Springer
- Year
- 1991
- Tongue
- English
- Weight
- 889 KB
- Volume
- 2
- Category
- Article
- ISSN
- 0935-4964
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## Abstract Large eddy simulation (LES) is based on separation of variable of interest into two partsβresolved and subgrid. The resolved part is obtained numerically using modified transport equation while the effect of the subgrid part is modelled using subgridβscale (SGS) models. In this paper we
The present study investigates the effect of taking into account the time dependency of the fine (subgrid) scales in a residual-based variational multiscale approach for large eddy simulation. The residual-based variational multiscale method with time-dependent (dynamic) subgrid scales is presented,
Recently, the e-expansion and recursive renormalization group (RNG) theories as well as approximate inertial manitblds (AIM) have been exploited as means of systematically modeling subgrid scales in large-eddy simulations (LES). Although these theoretical approaches are rather complicated mathematic