Dynamic model for large-eddy simulations near the limits of the inertial range of turbulence

F. Porte-Agel, C. Meneveau, M. B. Parlange

Research output: Chapter in Book/Report/Conference proceedingChapter (Book)Researchpeer-review


The dynamic model has been a path-breaking recent development in the field of Large-Eddy Simulation (LES) of turbulent flows. We briefly review the basic properties of the dynamic Smagorinsky model, with particular attention to its underlying assumption that the model coefficient is scale-invariant. Some applications where this assumption does not hold are discussed, among others simulations of wall-bounded flows that do not resolve the viscous sublayer. A new scale-dependent dynamic model is proposed, involving a secondary test-filter operation that allows one to probe from the simulated resolved field how the coefficient depends on scale. Applications to LES of a very high-Reynolds-number channel flow are presented, with comparisons to the results of the traditional dynamic model that assumes scale invariance of the coefficient.

Original languageEnglish
Title of host publicationProceedings of the 1999 3rd ASME/JSME Joint Fluids Engineering Conference, FEDSM'99, San Francisco, California, USA, 18-23 July 1999 (CD-ROM)
PublisherAmerican Society of Mechanical Engineers (ASME)
Number of pages1
ISBN (Print)0791819612
Publication statusPublished - 1999
Externally publishedYes


  • large eddy simulation
  • turbulent flow

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