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Wall Effects in Turbulent Rayleigh-Benard Convection in a Long Rectangular Cell

Kaczorowski, Matthias and Shishkin, Andrei and Wagner, Claus (2007) Wall Effects in Turbulent Rayleigh-Benard Convection in a Long Rectangular Cell. In: Springer Proceedings in Physics 117, pp. 185-187. Springer Verlag. 11th EUROMECH European Turbulence Conference, 2007-06-25 - 2007-06-28, Porto (Portugal). ISBN 978-3-540-72603-6. ISSN 0930-8989

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Direct numerical simulations of turbulent Rayleigh-B´enard convection have been carried out in a rectangular geometry with two different configurations employing either solid walls or periodic boundaries in longitudinal direction. The results show that the infinitely long rectangular cell delays the onset of convection, and hence the transition to a three-dimensional flow field. The analysis of energy spectra at various wall distances indicates that thermal energy held by small scale fluctuation in the vicinity of the wall is transferred into the large scales of the velocity field as wall distance increases.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Wall Effects in Turbulent Rayleigh-Benard Convection in a Long Rectangular Cell
AuthorsInstitution or Email of Authors
Kaczorowski, MatthiasUNSPECIFIED
Shishkin, AndreiUNSPECIFIED
Date:16 February 2007
Journal or Publication Title:Springer Proceedings in Physics 117
Refereed publication:No
In ISI Web of Science:No
Page Range:pp. 185-187
Silva Lopes, AlexandreUNSPECIFIED
Publisher:Springer Verlag
Series Name:Advances in Turbulence XI
Keywords:DNS, power spectra, boundary conditions, boundary layer thickness
Event Title:11th EUROMECH European Turbulence Conference
Event Location:Porto (Portugal)
Event Type:international Conference
Event Dates:2007-06-25 - 2007-06-28
Organizer:Faculdade de Engenharia da Universidade do Porto (FEUP)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L - no assignement
DLR - Research theme (Project):L -- no assignement
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Fluid Systems
Deposited By: Matthias Kaczorowski
Deposited On:14 Jan 2008
Last Modified:12 Dec 2013 20:23

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