Ten questions concerning the large-eddy simulation of turbulent flows

Details Ten questions concerning the large-eddy simulation of turbulent flows Ten questions concerning the large-eddy simulation of turbulent flows

Mar 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004njph....6...35p&link_type=abstract

New Journal of Physics, Volume 6, Issue 1, pp. 35 (2004).

Physics

51

Scientific paper

In the past 30 years, there has been considerable progress in the development of large-eddy simulation (LES) for turbulent flows, which has been greatly facilitated by the substantial increase in computer power. In this paper, we raise some fundamental questions concerning the conceptual foundations of LES and about the methodologies and protocols used in its application. The 10 questions addressed are stated at the end of the introduction. Several of these questions highlight the importance of recognizing the dependence of LES calculations on the artificial parameter Dgr (i.e. the filter width or, more generally, the turbulence resolution length scale). The principle that LES predictions of turbulence statistics should depend minimally on Dgr provides an alternative justification for the dynamic procedure.

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