Westhoff, Andreas und Bosbach, Johannes und Wagner, Claus (2014) Large-scale coherent structure dynamics and heat transport in turbulent mixed convective air. In: New Results in Numerical and Experimental Fluid Mechanics IX Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 124. Springer Verlag, Cham Heidelberg New York Dordrecht London. Seiten 285-292. doi: 10.1007/978-3-319-03158-3_29. ISBN 978-3-319-03157-6. ISSN 1612-2909.
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Offizielle URL: http://link.springer.com/chapter/10.1007/978-3-319-03158-3_29
Kurzfassung
We report on an experimental study of mixed convective air flow in a cuboidal container with an inlet and outlet slot at Ar = 3.3, Re = 1.0 × 10^4, Ra = 2.4×10^8 at a fluid pressure of P = 11.6 bar. Particle image velocimetry were performed with the objective to identify the dynamics of the large-scale circulations. In addition, we applied temperature measurements to determine the heat transport. Due to the unsteady nature of mixed convection in the present configuration, the velocity vector fields were subjected to a proper orthogonal decomposition in order to extract the predominant coherent structures. The analysis uncovers two structures consisting of three and four thermally induced large-scale circulations, which are arranged in longitudinal direction. Further, we found that the dynamics and the topology of the convection rolls strongly influences the heat transport between the container‘s inlet and outlet.
elib-URL des Eintrags: | https://elib.dlr.de/79335/ | ||||||||||||||||||||||||||||
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Dokumentart: | Beitrag im Sammelband | ||||||||||||||||||||||||||||
Zusätzliche Informationen: | DOI: 10.1007/978-3-319-03158-3_29; ISSN: 1860-0824 (electronic); ISBN 978-3-319-03158-3: (eBook); Library of Congress Control Number: 2013957123 | ||||||||||||||||||||||||||||
Titel: | Large-scale coherent structure dynamics and heat transport in turbulent mixed convective air | ||||||||||||||||||||||||||||
Autoren: |
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Datum: | 2014 | ||||||||||||||||||||||||||||
Erschienen in: | New Results in Numerical and Experimental Fluid Mechanics IX | ||||||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||||||||||
Band: | 124 | ||||||||||||||||||||||||||||
DOI: | 10.1007/978-3-319-03158-3_29 | ||||||||||||||||||||||||||||
Seitenbereich: | Seiten 285-292 | ||||||||||||||||||||||||||||
Herausgeber: |
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Verlag: | Springer Verlag, Cham Heidelberg New York Dordrecht London | ||||||||||||||||||||||||||||
Name der Reihe: | Notes on Numerical Fluid Mechanics and Multidisciplinary Design | ||||||||||||||||||||||||||||
ISSN: | 1612-2909 | ||||||||||||||||||||||||||||
ISBN: | 978-3-319-03157-6 | ||||||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||||||
Stichwörter: | turbulent mixed convection, proper orthogonal decomposition, coherent structures, large-scale circulation, heat transport | ||||||||||||||||||||||||||||
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 - Projekt Next Generation Train II (alt) | ||||||||||||||||||||||||||||
Standort: | Göttingen | ||||||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > Fluidsysteme | ||||||||||||||||||||||||||||
Hinterlegt von: | Westhoff, Andreas | ||||||||||||||||||||||||||||
Hinterlegt am: | 26 Mär 2014 13:32 | ||||||||||||||||||||||||||||
Letzte Änderung: | 18 Mär 2024 11:56 |
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