Mey, Tobias und Westhoff, Andreas und Wagner, Claus (2013) Experimental Investigation of Flow Structure Formation in a Heated Duct Flow. In: New Results in Numerical Experimental Fluid Mechanics VIII Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 121. Springer Verlag, Heidelberg New York Dordrecht London. Seiten 681-688. doi: 10.1007/978-3-642-35680-3_81. ISBN 978-3-642-35679-7. ISSN 1612-2909.
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Offizielle URL: http://link.springer.com/chapter/10.1007/978-3-642-35680-3_81
Kurzfassung
The pattern formation of a Poiseuille flow in a rectangular duct, which is heated from below, is studied experimentally for the Reynolds number Re = 200 within the Rayleigh number range 4 ×108 ≤ Ra ≤ 7 ×108 . The channel has an aspect ratio of Γ yz = width : height = 25 : 2. As working fluid, water (Pr ≈ 6) is used. In order to study the influence of buoyancy on the forced flow, velocity fields are measured plane parallel to the heated bottom plate by means of Particle Image Velocimetry (PIV). Furthermore, the measured data is analyzed concerning the flow structure formation as a function of the temperature difference between the inflow and the bottom of the duct. In this connection, two different mechanisms can be distinguished, which cause the transition from a laminar to a turbulent flow: a successively progressing transition on the one hand and, above a certain Archimedes number Ar, an abrupt transition.
elib-URL des Eintrags: | https://elib.dlr.de/66381/ | ||||||||||||||||||||||||
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Dokumentart: | Beitrag im Sammelband | ||||||||||||||||||||||||
Zusätzliche Informationen: | Online ISBN: 978-3-642-35680-3 | ||||||||||||||||||||||||
Titel: | Experimental Investigation of Flow Structure Formation in a Heated Duct Flow | ||||||||||||||||||||||||
Autoren: |
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Datum: | 2013 | ||||||||||||||||||||||||
Erschienen in: | New Results in Numerical Experimental Fluid Mechanics VIII | ||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||
Open Access: | Ja | ||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||||||
Band: | 121 | ||||||||||||||||||||||||
DOI: | 10.1007/978-3-642-35680-3_81 | ||||||||||||||||||||||||
Seitenbereich: | Seiten 681-688 | ||||||||||||||||||||||||
Herausgeber: |
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Verlag: | Springer Verlag, Heidelberg New York Dordrecht London | ||||||||||||||||||||||||
Name der Reihe: | Notes on Numerical Fluid Mechanics and Multidisciplinary Design | ||||||||||||||||||||||||
ISSN: | 1612-2909 | ||||||||||||||||||||||||
ISBN: | 978-3-642-35679-7 | ||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||
Stichwörter: | mixed convective flow, duct flow, heat transfer, structure formation | ||||||||||||||||||||||||
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 Neuartige Fahrzeugstrukturen (alt) | ||||||||||||||||||||||||
Standort: | Göttingen | ||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > Fluidsysteme | ||||||||||||||||||||||||
Hinterlegt von: | Westhoff, Andreas | ||||||||||||||||||||||||
Hinterlegt am: | 26 Nov 2010 10:04 | ||||||||||||||||||||||||
Letzte Änderung: | 31 Jul 2019 19:29 |
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