François, Daniela Gisele und Radespiel, Rolf und Reuß, Silvia und Probst, Axel (2015) Computations of Separated Flows with Hybrid RANS/LES Approaches. In: Adances in Simulation of Wing and Nacelle Stall Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 131 (1). Springer International Publishing. Seiten 23-39. doi: 10.1007/978-3-319-21127-5_2. ISBN 978-3-319-21126-8. ISSN 1612-2909.
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Offizielle URL: http://link.springer.com
Kurzfassung
In an effort to accurately compute nacelle stall processes, the research unit FOR1066 (Simulation of Wing and Nacelle Stall) has been working extensively on the development of advanced simulation methods. Due to the high dependency of the separation aerodynamics on the turbulent structures developed within the boundary layer, embedded LES methods appear promising to reliably compute such processes. Nevertheless, these approaches are characterized by exhibiting a very long “grey area“ (also known as adaptation distance) that may lead to the degradation of the whole solution. To shorten this adaptation distance, an advanced synthetic turbulence generator is implemented that forces the development of resolved turbulence at the inlet of the LES domain. The implementation is accessed for a zero pressure gradient flat plate, the HGR-01 airfoil, and a subsonic flow-through nacelle case. The numerical results are validated against experimental data and compared with numerical results without applying synthetic turbulence forcing. Results show that the implementation considerably reduces the required adaptation distance enhancing the overall solution. However, the success of the computation also depends on the solver numerical settings and the grid resolution. Advances in Simulation of Wing and Nacelle Stall Advances in Simulation of Wing and Nacelle Stall Look
elib-URL des Eintrags: | https://elib.dlr.de/99765/ | ||||||||||||||||||||
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Dokumentart: | Beitrag im Sammelband | ||||||||||||||||||||
Zusätzliche Informationen: | Results of the Closing Symposium of the DFG Research Unit FOR 1066, December 1-2, 2014, Braunschweig, Germany | ||||||||||||||||||||
Titel: | Computations of Separated Flows with Hybrid RANS/LES Approaches | ||||||||||||||||||||
Autoren: |
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Datum: | 2015 | ||||||||||||||||||||
Erschienen in: | Adances in Simulation of Wing and Nacelle Stall | ||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||
Band: | 131 | ||||||||||||||||||||
DOI: | 10.1007/978-3-319-21127-5_2 | ||||||||||||||||||||
Seitenbereich: | Seiten 23-39 | ||||||||||||||||||||
Herausgeber: |
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Verlag: | Springer International Publishing | ||||||||||||||||||||
Name der Reihe: | Notes on Numerical Fluid Mechanics and Multidisciplinary Design | ||||||||||||||||||||
ISSN: | 1612-2909 | ||||||||||||||||||||
ISBN: | 978-3-319-21126-8 | ||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||
Stichwörter: | hybrid RANS/LES, synthetic turbulence, TAU | ||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||
HGF - Programm: | Luftfahrt | ||||||||||||||||||||
HGF - Programmthema: | Flugzeuge | ||||||||||||||||||||
DLR - Schwerpunkt: | Luftfahrt | ||||||||||||||||||||
DLR - Forschungsgebiet: | L AR - Aircraft Research | ||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | L - Simulation und Validierung (alt) | ||||||||||||||||||||
Standort: | Göttingen , Stuttgart | ||||||||||||||||||||
Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > C²A²S²E - Center for Computer Applications in AeroSpace Science and Engineering | ||||||||||||||||||||
Hinterlegt von: | Micknaus, Ilka | ||||||||||||||||||||
Hinterlegt am: | 27 Nov 2015 16:08 | ||||||||||||||||||||
Letzte Änderung: | 22 Jan 2018 16:50 |
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