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Physics of Fluids / Volume 19 / Issue 4 / BRIEF COMMUNICATIONS

Phys. Fluids 19, 048105 (2007); http://dx.doi.org/10.1063/1.2722422 (4 pages)

Is plane-channel flow a friendly case for the testing of large-eddy simulation subgrid-scale models?

Johan Meyers1 and Pierre Sagaut2

1Department of Mechanical Engineering, Katholieke Universiteit Leuven, Celestijnenlaan 300A—bus 2421, B3001 Leuven, Belgium
2Institut Jean Le Rond d’Alembert, Université Pierre et Marie Curie—Paris 6, Boîte 162, 4 place Jussieu, 75252 Paris Cedex 05, France

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(Received 27 February 2007; accepted 6 March 2007; published online 27 April 2007)

We present the grid-convergence behavior of channel-flow direct numerical simulations (DNS) at coarse resolutions typically encountered in large-eddy simulation subgrid-model testing. An energy-conservative discretization method is used to systematically vary the streamwise (Nx) and spanwise (Nz) resolution. We observe that the skin friction does not converge monotonously, and at coarse resolutions, a line of Nx–Nz combinations is found where the error on the skinfriction is zero. Along this line, mean profiles are evaluated and found to fit surprisingly well fully resolved DNS results. The location of this line is shown to depend on the Reynolds number and the wall-normal resolution.

© 2007 American Institute of Physics

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KEYWORDS and PACS

Keywords

channel flow, friction

PACS

  • 47.60.-i

    Flow phenomena in quasi-one-dimensional systems

  • 47.10.ab

    Conservation laws and constitutive relations

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.2722422

PUBLICATION DATA

ISSN

1070-6631 (print)  
1089-7666 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    R. D. Moser, J. Kim, and N. N. Mansour, “Direct numerical simulation of turbulent channel flow up to Re-tau=590,” Phys. Fluids 11, 943 (1999)PHFLE6000011000004000943000001.

    J. Meyers, P. Sagaut, and B. J. Geurts, “Optimal model parameters for multi-objective large-eddy simulations,” Phys. Fluids 18, 095103 (2006)PHFLE6000018000009095103000001.


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