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François, Daniela Gisele und Radespiel, Rolf und Probst, Axel (2014) Forced synthetic turbulence approach to stimulate resolved turbulence generation in embedded LES. 5th Symposium on Hybrid RANS-LES Methods, 2014-03-19 - 2014-03-21, Houston, USA.
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Offizielle URL: http://mwikicfd.mace.manchester.ac.uk/hrlm/general-information
Kurzfassung
A synthetic turbulence generator is implemented in the DLR TAU-Code, to reduce the grey area that is typical for embedded LES approaches. The selected synthetic turbulence generator builds up a velocity field of fluctuations that reproduces the anisotropy and non-homogeneity of the boundary layer taken as reference from the RANS solution. In addition, the generator is significantly improved in order to reduce the numerical divergence of the generated velocity field and also to provide convective motion of the synthetic eddies. The imple- mentation was tested in a flat plate boundary layer and verified against experimen- tal data for the HGR-01 airfoil. The results show that the implementation shortens the transition distance to fully developed turbulence. The obtained flow profiles for the HGR-01 airfoil compare nicely to available PIV data.
| elib-URL des Eintrags: | https://elib.dlr.de/93119/ | ||||||||||||||||
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| Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||
| Zusätzliche Informationen: | Revised Full Papers will be published (Springer Series: "Notes on Numerical Fluid Mechanics and Multidisciplinary Design"). | ||||||||||||||||
| Titel: | Forced synthetic turbulence approach to stimulate resolved turbulence generation in embedded LES | ||||||||||||||||
| Autoren: |
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| Datum: | 2014 | ||||||||||||||||
| Referierte Publikation: | Ja | ||||||||||||||||
| Open Access: | Nein | ||||||||||||||||
| Gold Open Access: | Nein | ||||||||||||||||
| In SCOPUS: | Nein | ||||||||||||||||
| In ISI Web of Science: | Nein | ||||||||||||||||
| Name der Reihe: | Conference Proceedings | ||||||||||||||||
| Status: | veröffentlicht | ||||||||||||||||
| Stichwörter: | synthetic turbulence, embedded LES, DLR-TAU code, HGR-01 airfoil | ||||||||||||||||
| Veranstaltungstitel: | 5th Symposium on Hybrid RANS-LES Methods | ||||||||||||||||
| Veranstaltungsort: | Houston, USA | ||||||||||||||||
| Veranstaltungsart: | internationale Konferenz | ||||||||||||||||
| Veranstaltungsbeginn: | 19 März 2014 | ||||||||||||||||
| Veranstaltungsende: | 21 März 2014 | ||||||||||||||||
| Veranstalter : | TEXAS A&M University | ||||||||||||||||
| 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 | ||||||||||||||||
| Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > C²A²S²E - Center for Computer Applications in AeroSpace Science and Engineering | ||||||||||||||||
| Hinterlegt von: | Micknaus, Ilka | ||||||||||||||||
| Hinterlegt am: | 12 Dez 2014 14:10 | ||||||||||||||||
| Letzte Änderung: | 24 Apr 2024 19:58 |
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