Westhoff, Andreas und Schmeling, Daniel und Bosbach, Johannes und Wagner, Claus (2010) Dynamics of large-scale structures and heat transfer in turbulent mixed convection. In: Proceedings of the Sixth Int. Symposium on turbulence, Heat and Mass Transfer Turbulence, Heat and Mass Tranfer 6. Begell House Inc. New York, Wallingford (UK). Seiten 107-110. ISBN 978-1-56700-262-1.
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Kurzfassung
Low frequency oscillations have been observed in the heat transfer of mixed convection in a rectangular cavity with an aspect ratio of $\Gamma_{\mathrm{xz}} = 1$ and $\Gamma_{\mathrm{yz}} = 5$.~Mixed convective flow at $Ra = 2.4 \times 10^8$, $Re = 1.0 \times 10^{4}$, $Ar = 3.3$ and $Pr \approx 0.7$ has been studied to determine the nature of these oscillations. Therefore Particle Image Velocimetry (PIV) and temperature measurements have been performed under ambient and high pressure conditions. The PIV results have been analysed using Proper Orthogonal Decomposion (POD) to identify the characteristic frequencies of the coherent large-scale structures and their dynamics have been compared with the low frequency oscillations found in the heat transfer.
elib-URL des Eintrags: | https://elib.dlr.de/66665/ | ||||||||||||||||||||
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Dokumentart: | Beitrag im Sammelband | ||||||||||||||||||||
Titel: | Dynamics of large-scale structures and heat transfer in turbulent mixed convection | ||||||||||||||||||||
Autoren: |
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Datum: | September 2010 | ||||||||||||||||||||
Erschienen in: | Proceedings of the Sixth Int. Symposium on turbulence, Heat and Mass Transfer | ||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||
Seitenbereich: | Seiten 107-110 | ||||||||||||||||||||
Herausgeber: |
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Verlag: | Begell House Inc. New York, Wallingford (UK) | ||||||||||||||||||||
Name der Reihe: | Turbulence, Heat and Mass Tranfer 6 | ||||||||||||||||||||
ISBN: | 978-1-56700-262-1 | ||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||
Stichwörter: | mixed convection, turbulence, heat transfer, large scale circulations | ||||||||||||||||||||
HGF - Forschungsbereich: | Verkehr und Weltraum (alt) | ||||||||||||||||||||
HGF - Programm: | Luftfahrt | ||||||||||||||||||||
HGF - Programmthema: | Starrflügler (alt) | ||||||||||||||||||||
DLR - Schwerpunkt: | Luftfahrt | ||||||||||||||||||||
DLR - Forschungsgebiet: | L AR - Starrflüglerforschung | ||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | L - Systeme & Kabine (alt) | ||||||||||||||||||||
Standort: | Göttingen | ||||||||||||||||||||
Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > Fluidsysteme | ||||||||||||||||||||
Hinterlegt von: | Micknaus, Ilka | ||||||||||||||||||||
Hinterlegt am: | 20 Dez 2010 15:13 | ||||||||||||||||||||
Letzte Änderung: | 20 Dez 2010 15:13 |
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