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The design and construction of implicit LES models
Author(s) -
Margolin L. G.,
Rider W. J.
Publication year - 2004
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/fld.862
Subject(s) - dissipative system , dissipation , nonlinear system , stability (learning theory) , flow (mathematics) , mathematics , large eddy simulation , computer simulation , computer science , mechanics , physics , turbulence , thermodynamics , quantum mechanics , machine learning
We offer preliminary thoughts on the design of a modified equation and the construction of a corresponding numerical algorithm, which may be intended for use in an implicit large eddy simulation. The principle of design here is based on ensuring a form for the energy dissipation that is not significantly dissipative on the resolved scales of the numerical mesh, but is strongly dissipative when the solution is unresolved and so provides strong nonlinear stability in the simulation. The construction process is modelled on the composition (hybridization) of two flux approximations by means of a nonlinear, flow‐dependent switch. Published in 2004 by John Wiley & Sons, Ltd.