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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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Abstract
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) | ||||||||
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| Title: | Wall Effects in Turbulent Rayleigh-Benard Convection in a Long Rectangular Cell | ||||||||
| Authors: |
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| Date: | 16 February 2007 | ||||||||
| Journal or Publication Title: | Springer Proceedings in Physics 117 | ||||||||
| Refereed publication: | No | ||||||||
| In SCOPUS: | No | ||||||||
| In ISI Web of Science: | No | ||||||||
| Page Range: | pp. 185-187 | ||||||||
| Editors: |
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| Publisher: | Springer Verlag | ||||||||
| Series Name: | Advances in Turbulence XI | ||||||||
| ISSN: | 0930-8989 | ||||||||
| ISBN: | 978-3-540-72603-6 | ||||||||
| Status: | Published | ||||||||
| 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: | Aeronautics | ||||||||
| HGF - Program Themes: | L - no assignement | ||||||||
| DLR - Research area: | Aeronautics | ||||||||
| DLR - Program: | L - no assignement | ||||||||
| DLR - Research theme (Project): | ["eprint_fieldopt_dlr_project_search_L000" not defined] | ||||||||
| Location: | Göttingen | ||||||||
| Institutes and Institutions: | Institute of Aerodynamics and Flow Technology > Fluid Systems | ||||||||
| Deposited By: | Matthias Kaczorowski | ||||||||
| Deposited On: | 14 Jan 2008 | ||||||||
| Last Modified: | 15 Jan 2010 00:13 |
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