NDLI: Index of Quality for Large Eddy Simulations

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Ismail, B. Celik Zeynep, N. Cehreli Yavuz, Ibrahim
Copyright Year	2003
Abstract	In the light of rapidly increasing applications of large-eddy-simulations (LES) it is deemed necessary to impose some quality assessment measures for such studies. The validation of LES is difficult because of the fact that both the sub-grid scale (sgs) model contribution and numerical discretization errors are functions of the grid resolution. In this study various index of quality measures, here and after referred to as LES_IQ, are proposed and applied to some case studies. The recommended LES_IQ is based on the concept of Richardson’s extrapolation. It is postulated that in practical applications of LES numerical dissipation will always be a significant part of the overall dissipation and it must be accounted for in any assessment of the quality of LES results. It is further suggested that an LES_IQ of 75% to 85% can be considered adequate for most engineering applications that typically occur at high Reynolds numbers; LES-IQ greater than 90% can be classified as DNS.
Sponsorship	Fluids Engineering Division
Starting Page	1477
Ending Page	1483
Page Count	7
File Format	PDF
ISBN	0791836975
DOI	10.1115/FEDSM2003-45448
e-ISBN	0791836738
Volume Number	Volume 2: Symposia, Parts A, B, and C
Conference Proceedings	ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference
Language	English
Publisher Date	2003-07-06
Publisher Place	Honolulu, Hawaii, USA
Access Restriction	Subscribed
Subject Keyword	Errors Large eddy simulation Resolution (optics) Energy dissipation Reynolds number Engineering systems and industry applications
Content Type	Text
Resource Type	Article

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