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Knopp, Tobias und Probst, Axel (2013) An Algebraic Sensor for the RANS-LES Switch in Delayed Detached-Eddy Simulation. In: New Results in Numerical axperimental Fluid Mechanics VIII Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 121. Springer Verlag, Heidelberg New York Dordrecht London. Seiten 457-464. doi: 10.1007/978-3-642-35680-3_54. ISBN 978-3-642-35679-7.
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Offizielle URL: http://link.springer.com/chapter/10.1007%2F978-3-642-35680-3_54
Kurzfassung
A new hybrid RANS-LES method of DDES-type for flows over airfoil sections with small/incipient separation is presented. It alters the RANS-LES switch based on the function fd in the DDES formulation. Regions of attached boundary layer flow, the separation point and the subsequent region of separation are detected by sensors. They are based on a combination of algebraic properties of the mean velocity profiles in wall-normal direction and of integral boundary layer quantities, namely the shape factor H12. While the RANS length scale lRANS is used in attached boundary layers, the LES length scale CDESΔ is used in regions of separated flow. In particular, thin regions of (incipiently) separated flow are treated in LES mode except for a near-wall region where lRANS is used. Moreover, in the vicinity of the separation point or in the entire separation region, a stochastic SGS model can be used as a simple method to force the generation of turbulent content.
| elib-URL des Eintrags: | https://elib.dlr.de/82359/ | ||||||||||||||||||||||||
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| Dokumentart: | Beitrag im Sammelband | ||||||||||||||||||||||||
| Zusätzliche Informationen: | Online ISBN: 978-3-642-35680-3, DOI: 10.1007/978-3-642-35680-3_54 | ||||||||||||||||||||||||
| Titel: | An Algebraic Sensor for the RANS-LES Switch in Delayed Detached-Eddy Simulation | ||||||||||||||||||||||||
| Autoren: |
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| Datum: | 2013 | ||||||||||||||||||||||||
| Erschienen in: | New Results in Numerical axperimental Fluid Mechanics VIII | ||||||||||||||||||||||||
| Referierte Publikation: | Ja | ||||||||||||||||||||||||
| Open Access: | Nein | ||||||||||||||||||||||||
| Gold Open Access: | Nein | ||||||||||||||||||||||||
| In SCOPUS: | Nein | ||||||||||||||||||||||||
| In ISI Web of Science: | Nein | ||||||||||||||||||||||||
| Band: | 121 | ||||||||||||||||||||||||
| DOI: | 10.1007/978-3-642-35680-3_54 | ||||||||||||||||||||||||
| Seitenbereich: | Seiten 457-464 | ||||||||||||||||||||||||
| Herausgeber: |
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| Verlag: | Springer Verlag, Heidelberg New York Dordrecht London | ||||||||||||||||||||||||
| Name der Reihe: | Notes on Numerical Fluid Mechanics and Multidisciplinary Design | ||||||||||||||||||||||||
| ISBN: | 978-3-642-35679-7 | ||||||||||||||||||||||||
| Status: | veröffentlicht | ||||||||||||||||||||||||
| Stichwörter: | RANS-LES Switch, integral boundary layer | ||||||||||||||||||||||||
| HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||||||
| HGF - Programm: | Luftfahrt | ||||||||||||||||||||||||
| HGF - Programmthema: | Starrflügler (alt) | ||||||||||||||||||||||||
| DLR - Schwerpunkt: | Luftfahrt | ||||||||||||||||||||||||
| DLR - Forschungsgebiet: | L AR - Starrflüglerforschung | ||||||||||||||||||||||||
| DLR - Teilgebiet (Projekt, Vorhaben): | L - Simulation & Validierung (alt) | ||||||||||||||||||||||||
| Standort: | Göttingen | ||||||||||||||||||||||||
| Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > C²A²S²E - Center for Computer Applications in AeroSpace Science and Engineering | ||||||||||||||||||||||||
| Hinterlegt von: | Micknaus, Ilka | ||||||||||||||||||||||||
| Hinterlegt am: | 27 Mai 2013 16:13 | ||||||||||||||||||||||||
| Letzte Änderung: | 02 Mär 2015 15:19 |
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