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Progress in Scale-Resolving Simulations with the DLR-TAU Code

Autor(en): A. Probst, S. Reuß
Zusammenfassung: This paper provides an overview of the recent development of scale-resolving simulation methods in the DLR-TAU code for flow simulations near the border of the flight envelope. On the numerical side, a hybrid low-dissipation low-dispersion discretization scheme is presented that allows for accurate wall-resolved and wall-modelled LES computations and is shown to provide satisfying hybrid RANS/LES predictions of a Delta wing flow on a unstructured mesh. In the field of physical modelling, the grey-area issue of non-zonal hybrid RANS/LES is addressed through a vorticity-sensitive sub-grid filter scale which is shown to improve the prediction of a backward-facing step flow. Moreover, an embedded-LES functionality based on the Synthetic Eddy Method is implemented in TAU and applied to a complex multi-element airfoil flow.
Veranstaltung: Deutscher Luft- und Raumfahrtkongress 2016, Braunschweig
Verlag, Ort: Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn, 2016
Medientyp: Conference Paper
Sprache: englisch
Format: 21,0 x 29,7 cm, 6 Seiten
URN: urn:nbn:de:101:1-201611255177
Stichworte zum Inhalt: Digital-X, hybrid RANS/LES
Verfügbarkeit: Download - Bitte beachten Sie die Nutzungsbedingungen dieses Dokuments: Copyright protected
Veröffentlicht am: 25.11.2016