@inbook{737d41c2ddcb45a1a1ec4cb070f7c1ae,

title = "Alpha-modeling strategy for LES of turbulent mixing",

abstract = "The α-modeling strategy is followed to derive a new subgrid parameterization of the turbulent stress tensor in large-eddy simulation (LES). The LES-α modeling yields an explicitly filtered subgrid parameterization which contains the filtered nonlinear gradient model as well as a model which represents Leray-regularization. The LES-α model is compared with similarity and eddy-viscosity models that also use the dynamic procedure. Numerical simulations of a turbulent mixing layer are performed using both a second order, and a fourth order accurate finite volume discretization. The Leray model emerges as the most accurate, robust and computationally efficient among the three LES-α subgrid parameterizations for the turbulent mixing layer. The evolution of the resolved kinetic energy is analyzed and the various subgrid-model contributions to it are identified. By comparing LES-α at different subgrid resolutions, an impression of finite volume discretization error dynamics is obtained.",

keywords = "METIS-205846",

author = "Geurts, {Bernard J.} and Holm, {Darryl D.}",

year = "2002",

doi = "10.1007/0-306-48421-8_7",

language = "English",

isbn = "978-1-4020-0523-7",

series = "Fluid Mechanics and Its Applications",

publisher = "Kluwer Academic Publishers",

pages = "237--278",

editor = "D. Drikakis and B.J. Geurts",

booktitle = "Turbulent Flow Computation",

address = "Netherlands",

}