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Antialiasing filters for coupled Reynolds-averaged/large-eddy simulations

journal contribution
posted on 2005-03-01, 00:00 authored by Jorg SchluterJorg Schluter, H Pitsch
The increasing complexity of engineering problems makes the coupling of multiple simulation codes attractive.
In fluid mechanical applications, the physical range of flow phenomena that can be modeled can be extended
significantly by coupling flow solvers based on the Reynolds-averaged Navier–Stokes (RANS) approach and on
large-eddy simulations (LES). These separate flow solvers run simultaneously and exchange information at the
interface. However, because the LES flow solver operates usually with a much smaller time step, the LES data
have to be sampled to provide data for the RANS flow solver. In the sampling process, aliasing errors can occur.
Possibilities are investigated to suppress aliasing errors while preserving the amplitude and phase of the long wave
spectrum.

History

Journal

AIAA journal

Volume

43

Issue

3

Pagination

608 - 615

Publisher

American Institute of Aeronautics and Astronautics

Location

[Reston, Va.]

ISSN

1533-385X

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

2004, Center for Turbulence Research, Stanford University