High-Order Algorithms for Large-Eddy Simulation of Incompressible Flows

Authors:
R. Pasquetti;C. J. Xu
Affiliations:
Laboratory J. A. Dieudonné, UMR CNRS 6621, University of Nice-Sophia, Antipolis, 06108 Nice, France. rpas@math.unice.fr;Department of Mathematics, University of Xiamen, 361005 Xiamen, Fujian, China
Venue:
Journal of Scientific Computing
Year:
2002

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Abstract

“Defiltering-Transport-Filtering” (DTF) algorithms are proposed for the large eddy simulation of incompressible flows by using high order methods. These new algorithms are based (i) on an approximate deconvolution method for the modeling of the sub-grid scale stress tensor and (ii) on a semi-Lagrangian method to handle the convective term. Such algorithms are implemented in 3D spectral solvers (one homogeneous direction), using differential operators to handle in an approximate way the filtering and defiltering operations. Stability and dissipation properties of the schema are discussed. Preliminary results, obtained with a Chebyshev collocation solver, for the 3D wake of a cylinder with Reynolds number equal to 1000 are presented.