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A new subgrid characteristic length for turbulence simulations on anisotropic grids

Author
Trias, F. X.; Gorobets, A.; Silvis, M.; Verstappen, R.; Oliva, A.
Type of activity
Journal article
Journal
Physics of fluids
Date of publication
2017-11-29
Volume
29
Number
11
First page
115109-1
Last page
115109-15
DOI
https://doi.org/10.1063/1.5012546 Open in new window
Repository
http://hdl.handle.net/2117/114556 Open in new window
URL
http://aip.scitation.org/doi/10.1063/1.5012546 Open in new window
Abstract
Direct numerical simulations of the incompressible Navier-Stokes equations are not feasible yet for most practical turbulent flows. Therefore, dynamically less complex mathematical formulations are necessary for coarse-grained simulations. In this regard, eddy-viscosity models for Large-Eddy Simulation (LES) are probably the most popular example thereof. This type of models requires the calculation of a subgrid characteristic length which is usually associated with the local grid size. For isotr...
Citation
Trias, F. X., Gorobets, A., Silvis, M., Verstappen, R., Oliva, A. A new subgrid characteristic length for turbulence simulations on anisotropic grids. "Physics of fluids", 29 Novembre 2017, vol. 29, núm. 11, p. 115109-1-115109-15.
Keywords
Navier Stokes equations, Turbulence simulations, Turbulent flows, Viscosity, Vortex dynamics
Group of research
CTTC - Heat and Mass Transfer Technological Center

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