Kaczorowski, Matthias und Shishkina, Olga und Shishkin, Andrei und Wagner, Claus und Xia, Ke-Qing (2010) Analysis of the large-scale circulation and the boundary layers in turbulent Rayleigh-Benard convection. Direct and Large-Eddy Simulation 8, 2010-07-07 - 2010-07-09, Eindhoven, The Netherlands.
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Kurzfassung
In the present study direct numerical simulations (DNS) of turbulent Rayleigh-Benard convection in a cube with 8e6 <= Ra <= 1e9 and Pr = 4.38 are analysed. The Re-Ra-scaling of the large-scale circulation (LSC) and its local velocity distribution are investigated, revealing that the LSC velocities are non-constant along its path length, leading to slightly different Re-Ra-scalings based on a local point measurement and the mean properties of the LSC. It is shown that the simulation results are close to the theoretical prediction Re ~ Nu^2 for Prandtl-Blasius boundary layer dominated regimes. The scaling of side-wall and horizontal plate boundary layer thicknesses is investigated in order to test the theoretical prediction by Grossmann & Lohse JFM 486 (2003). It is observed that delta_{sw} / delta_p follows the prediction for 'laterally restricted' flow, since delta_{sw} / delta_p ~ const.
elib-URL des Eintrags: | https://elib.dlr.de/64598/ | ||||||||||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag, Paper) | ||||||||||||||||||||||||
Titel: | Analysis of the large-scale circulation and the boundary layers in turbulent Rayleigh-Benard convection | ||||||||||||||||||||||||
Autoren: |
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Datum: | 2010 | ||||||||||||||||||||||||
Referierte Publikation: | Nein | ||||||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||||||
Name der Reihe: | Conference Proceedings | ||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||
Stichwörter: | boundary layers, large-scale circulation, mean wind, mean flow | ||||||||||||||||||||||||
Veranstaltungstitel: | Direct and Large-Eddy Simulation 8 | ||||||||||||||||||||||||
Veranstaltungsort: | Eindhoven, The Netherlands | ||||||||||||||||||||||||
Veranstaltungsart: | Workshop | ||||||||||||||||||||||||
Veranstaltungsbeginn: | 7 Juli 2010 | ||||||||||||||||||||||||
Veranstaltungsende: | 9 Juli 2010 | ||||||||||||||||||||||||
Veranstalter : | ERCOFTAC WORKSHOP | ||||||||||||||||||||||||
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 - Konzepte & Integration (alt) | ||||||||||||||||||||||||
Standort: | Göttingen | ||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > Fluidsysteme | ||||||||||||||||||||||||
Hinterlegt von: | Kaczorowski, Matthias | ||||||||||||||||||||||||
Hinterlegt am: | 03 Dez 2010 13:08 | ||||||||||||||||||||||||
Letzte Änderung: | 24 Apr 2024 19:29 |
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