DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Contact | Deutsch
Fontsize: [-] Text [+]

Flow Structure Formation of Turbulent Mixed Convection in a Closed Rectangular Cavity

Schmeling, Daniel and Westhoff, Andreas and Kühn, Matthias and Bosbach, Johannes and Wagner, Claus (2010) Flow Structure Formation of Turbulent Mixed Convection in a Closed Rectangular Cavity. In: Springer-Verlag Berlin Heidelberg. pp. 571-578. ISBN 978-3-642-14242-0. ISSN 1612-2909

[img] PDF - Registered users only - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader


An experimental investigation of flow structure formation in turbulent mixed convection in a closed rectangular cavity with an aspect ratio of 1 : 1 : 5 and air as working fluid is presented. Mixed convection at Re = 1.1 · 10^4 and Ra = 3.0 · 10^8 is studied under well-defined conditions by combination of forced and thermal convection. The resulting flow structures strongly depend on the ratio of inertia and buoyancy forces. A 2D mean wind, which can be approximated by a solid body rotation, is found at pure forced convection. With increasing Archimedes number (Ar), realized by a temperature gradient between bottom and ceiling of the convection cell, this structure becomes instable. Leading to four convection rolls for Ar = 3.4, which are oriented in longitudinal direction of the cell, are observed.

Document Type:Contribution to a Collection
Title:Flow Structure Formation of Turbulent Mixed Convection in a Closed Rectangular Cavity
AuthorsInstitution or Email of Authors
Schmeling, DanielDaniel.Schmeling@dlr.de
Westhoff, AndreasAndreas.Westhoff@dlr.de
Kühn, MatthiasMatthias.Kuehn@dlr.de
Bosbach, JohannesJohannes.Bosbach@dlr.de
Wagner, ClausClaus.Wagner@dlr.de
Refereed publication:Yes
Volume:Vol. 1
Page Range:pp. 571-578
Dillmann, AndreasUNSPECIFIED
Heller, GerdAirbus Deutschland
Klaas, MichaelRWTH Aachen
Kreplin, Hans-PeterUNSPECIFIED
Nitsche, WolfgangTU Berlin
Schröder, WolfgangRWTH Aachen
Publisher:Springer-Verlag Berlin Heidelberg
Keywords:Mixed Convection, PIV, Large Scale Structures
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics, Transport
HGF - Program Themes:Aircraft Research, Terrestrial Vehicles
DLR - Research area:Aeronautics, Transport
DLR - Program:L AR - Aircraft Research, V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):L - Concepts & Integration, V - Fahrerassistenz (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Fluid Systems
Deposited By: Daniel Schmeling
Deposited On:15 Dec 2009 08:50
Last Modified:12 Dec 2013 20:38

Repository Staff Only: item control page

Help & Contact
electronic library is running on EPrints 3.3.12
Copyright © 2008-2012 German Aerospace Center (DLR). All rights reserved.