Wagner, Sebastian und Shishkina, Olga und Wagner, Claus (2014) Numerical investigation of the spatial resolution requirements for turbulent Rayleigh-Benard convection. In: Turbulence and Interactions Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 125. Springer Verlag, Berlin Heidelberg. Seiten 181-187. doi: 10.1007/978-3-662-43489-5_22. ISBN 978-3-662-43488-8. ISSN 1612-2909.
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Offizielle URL: http://link.springer.com/chapter/10.1007/978-3-662-43489-5_22
Kurzfassung
The key requirement for setting up a direct numerical simulation (DNS) is a sufficiently fine grid allowing to resolve locally all relevant micro-scales. In case of turbulent Rayleigh-Bénard convection (RBC) this is usually done by fulfilling different analytically derived criteria for the boundary layers and the bulk flow. In order to analyse if these requirements are sufficient, DNS of turbulent RBC in a cylindrical container with aspect ratio unity and Prandtl number Pr = 0.786 have been performed for Rayleigh numbers Ra up to 109. The micro-scales obtained in the DNS as well astheir scaling with Ra are compared with the corresponding theoretical predictions. The analysis reveals that the smallest scales, occurring close to the wall, are about half of the estimated ones. Furthermore, their scaling differs slightly from the estimations while the criterion for the bulk flow fits quite well.
elib-URL des Eintrags: | https://elib.dlr.de/89950/ | ||||||||||||||||||||||||||||
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Dokumentart: | Beitrag im Sammelband | ||||||||||||||||||||||||||||
Zusätzliche Informationen: | DOI: 10.1007/978-3-662-43489-5_19, Online ISBN: 978-3-662-43489-5, Proceedings of the TI 2012 Conference ABC | ||||||||||||||||||||||||||||
Titel: | Numerical investigation of the spatial resolution requirements for turbulent Rayleigh-Benard convection | ||||||||||||||||||||||||||||
Autoren: |
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Datum: | 2014 | ||||||||||||||||||||||||||||
Erschienen in: | Turbulence and Interactions | ||||||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||||||||||
Band: | 125 | ||||||||||||||||||||||||||||
DOI: | 10.1007/978-3-662-43489-5_22 | ||||||||||||||||||||||||||||
Seitenbereich: | Seiten 181-187 | ||||||||||||||||||||||||||||
Herausgeber: |
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Verlag: | Springer Verlag, Berlin Heidelberg | ||||||||||||||||||||||||||||
Name der Reihe: | Notes on Numerical Fluid Mechanics and Multidisciplinary Design | ||||||||||||||||||||||||||||
ISSN: | 1612-2909 | ||||||||||||||||||||||||||||
ISBN: | 978-3-662-43488-8 | ||||||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||||||
Stichwörter: | Direct Numerical Simulation, Thermal Convection | ||||||||||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||||||||||
HGF - Programm: | Verkehr | ||||||||||||||||||||||||||||
HGF - Programmthema: | Bodengebundener Verkehr (alt) | ||||||||||||||||||||||||||||
DLR - Schwerpunkt: | Verkehr | ||||||||||||||||||||||||||||
DLR - Forschungsgebiet: | V BF - Bodengebundene Fahrzeuge | ||||||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | V - Next Generation Train III (alt) | ||||||||||||||||||||||||||||
Standort: | Göttingen | ||||||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > Fluidsysteme | ||||||||||||||||||||||||||||
Hinterlegt von: | Micknaus, Ilka | ||||||||||||||||||||||||||||
Hinterlegt am: | 18 Sep 2014 15:59 | ||||||||||||||||||||||||||||
Letzte Änderung: | 18 Mär 2024 12:30 |
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