Knopp, Tobias und Reuther, Nico und Novara, Matteo und Schanz, Daniel und Schülein, Erich und Schröder, Andreas und Kähler, Christian (2023) Modification of the SSG/LRR-Omega Model for Turbulent Boundary Layer Flows in an Adverse Pressure Gradient. Flow Turbulence and Combustion, 111, Seiten 409-438. Springer. doi: 10.1007/s10494-023-00457-8. ISSN 1386-6184.
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Offizielle URL: https://link.springer.com/article/10.1007/s10494-023-00457-8
Kurzfassung
A modification of the RANS turbulence model SSG/LRR-omega for turbulent boundary layers in an adverse pressure gradient is presented. The modification is based on a wall law for the mean velocity, in which the log law is progressively eroded in an adverse pressure gradient and an extended wall law (designated loosely as a half-power law) emerges above the log law. An augmentation term for the half-power law region is derived from the analysis of the boundary-layer equation for the specific rate of dissipation omega. An extended data structure within the RANS solver provides, for each viscous wall point, the field points on a wall normal line. This enables the evaluation of characteristic boundary layer parameters for the local activation of the augmentation term. The modification is calibrated using a joint DLR/UniBw turbulent boundary layer experiment. The modified model yields an improved predictive accuracy for flow separation. Finally, the applicability of the modified model to a 3D wing-body configuration is demonstrated.
elib-URL des Eintrags: | https://elib.dlr.de/196215/ | ||||||||||||||||||||||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||||||||||||||
Titel: | Modification of the SSG/LRR-Omega Model for Turbulent Boundary Layer Flows in an Adverse Pressure Gradient | ||||||||||||||||||||||||||||||||
Autoren: |
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Datum: | Juli 2023 | ||||||||||||||||||||||||||||||||
Erschienen in: | Flow Turbulence and Combustion | ||||||||||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||||||||||
Open Access: | Ja | ||||||||||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||||||||||||||
Band: | 111 | ||||||||||||||||||||||||||||||||
DOI: | 10.1007/s10494-023-00457-8 | ||||||||||||||||||||||||||||||||
Seitenbereich: | Seiten 409-438 | ||||||||||||||||||||||||||||||||
Herausgeber: |
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Verlag: | Springer | ||||||||||||||||||||||||||||||||
ISSN: | 1386-6184 | ||||||||||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||||||||||
Stichwörter: | SSG/LRR-omega; RSM; adverse pressure gradient; RANS; turbulent boundary layer | ||||||||||||||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||||||||||||||
HGF - Programm: | Luftfahrt | ||||||||||||||||||||||||||||||||
HGF - Programmthema: | Effizientes Luftfahrzeug | ||||||||||||||||||||||||||||||||
DLR - Schwerpunkt: | Luftfahrt | ||||||||||||||||||||||||||||||||
DLR - Forschungsgebiet: | L EV - Effizientes Luftfahrzeug | ||||||||||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | L - Digitale Technologien | ||||||||||||||||||||||||||||||||
Standort: | Göttingen | ||||||||||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > CASE, GO Institut für Aerodynamik und Strömungstechnik > Experimentelle Verfahren, GO Institut für Aerodynamik und Strömungstechnik > Hochgeschwindigkeitskonfigurationen, GO | ||||||||||||||||||||||||||||||||
Hinterlegt von: | Knopp, Dr.rer.nat. Tobias | ||||||||||||||||||||||||||||||||
Hinterlegt am: | 09 Aug 2023 10:48 | ||||||||||||||||||||||||||||||||
Letzte Änderung: | 11 Aug 2023 10:05 |
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