A simple clipping procedure for the dynamic mixed model based on Taylor series approximation

A simple clipping procedure for the dynamic mixed model based on Taylor series approximation

A simple clipping procedure based on Taylor series approximation was suggested to improve the stability of LES computations using the dynamic mixed model (DMM). The clipping procedure derived from a rigorous mathematical analysis uses terms which are anyway determined in the DMM model and thus, does...

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Veröffentlicht in:Communications in numerical methods in engineering 2006-01, Vol.22 (1), p.55-61
Hauptverfasser: Kornev, N. V., Tkatchenko, I. V., Hassel, E.
Format: Artikel
Sprache:eng
Schlagworte:
Approximation
Clipping
clipping procedure
Computational techniques
dynamic mixed model
Dynamics
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
LES
Mathematical analysis
Mathematical methods in physics
Mathematical models
Physics
Taylor series
Turbulence
Turbulent mixing
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Beschreibung
Zusammenfassung:A simple clipping procedure based on Taylor series approximation was suggested to improve the stability of LES computations using the dynamic mixed model (DMM). The clipping procedure derived from a rigorous mathematical analysis uses terms which are anyway determined in the DMM model and thus, does not require additional calculations. The effect of the clipping was tested by calculations of turbulent mixing in a coaxial jet mixer. The suggested procedure has potential to be extended to LES of complex‐geometry turbulent flows. Copyright © 2005 John Wiley & Sons, Ltd.
ISSN:1069-8299
1099-0887
DOI:10.1002/cnm.798