Schmeling, Daniel und Bosbach, Johannes und Wagner, Claus (2014) Temperature Oscillations in Turbulent Mixed Convective Air Flows. In: Turbulence and Interactions Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 125. Springer Verlag, Berlin Heidelberg. Seiten 157-163. doi: 10.1007/978-3-662-43489-5_19. 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_19
Kurzfassung
We report on measurements of temperature oscillations observed in turbulent mixed convection in a rectangular enclosure. They are correlated to fluctuations and spontaneous reorientations of the large-scale circulations in the flow. Stable temperature configurations, periodic reconfigurations as well as spontaneous reversals and reorientations were detected. We ascribe the observed dynamics of the largescale flow to the interaction between the superimposed shear forces of the forced convective flow and the buoyancy driven flow. Comparison with smoke visualisations allowed to assign the observed temperature distributions to a certain number and configuration of convection rolls. A frequency analysis of the oscillations as a function of the characteristic numbers is conducted revealing a sophisticated dependency of the dynamics of the large-scale flow on Ar, Re or Ra.
elib-URL des Eintrags: | https://elib.dlr.de/75617/ | ||||||||||||||||||||||||||||
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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 | ||||||||||||||||||||||||||||
Titel: | Temperature Oscillations in Turbulent Mixed Convective Air Flows | ||||||||||||||||||||||||||||
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_19 | ||||||||||||||||||||||||||||
Seitenbereich: | Seiten 157-163 | ||||||||||||||||||||||||||||
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: | Temperature Oscillations, Mixed Convection, Air Flow | ||||||||||||||||||||||||||||
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 - Systeme und Kabine (alt) | ||||||||||||||||||||||||||||
Standort: | Göttingen | ||||||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > Fluidsysteme | ||||||||||||||||||||||||||||
Hinterlegt von: | Micknaus, Ilka | ||||||||||||||||||||||||||||
Hinterlegt am: | 18 Sep 2014 15:57 | ||||||||||||||||||||||||||||
Letzte Änderung: | 18 Mär 2024 12:30 |
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