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Kaczorowski, Matthias and Wagner, Claus (2009) Study on the resolution requirements for DNS in turbulent Rayleigh-Bénard convection. 2nd International Conference on Turbulence and Interactions 2009, 2009-05-29 - 2009-06-02, Sainte-Luce, Martinique, France.
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Abstract
Two different recommendations by Gr"otzbach and Verzicco which are based on DNS that differ by about $5$ orders of magnitude lead to the assumption that the resolution requirements strongly depend on the turbulent sate of the flow. It is therefore envisaged to perform a number of direct simulations for Ra>10^5 and compare not only the Nusselt number but also the impact of the resolution on the statistics of the boundary layers as a function of Ra. For this purpose a set of numerical simulations in the range 3.5x10^5 <= Ra <= 2.31x10^8 is available, so that the grids can be precisely adapted to the desired resolution. Hence, not only global quantities, but also local properties of the flow can be compared, in order to have a sound basis for a comparison.
| Item URL in elib: | https://elib.dlr.de/55361/ | |||||||||
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| Document Type: | Conference or Workshop Item (Speech, Paper) | |||||||||
| Additional Information: | Accepted papers will be published in Notes of Numerical Fluid Mechanics and Multidisciplinary Design (NMFM) – Springer. | |||||||||
| Title: | Study on the resolution requirements for DNS in turbulent Rayleigh-Bénard convection | |||||||||
| Authors: |
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| Date: | 2009 | |||||||||
| Refereed publication: | No | |||||||||
| Open Access: | No | |||||||||
| Gold Open Access: | No | |||||||||
| In SCOPUS: | No | |||||||||
| In ISI Web of Science: | No | |||||||||
| Status: | Published | |||||||||
| Keywords: | resolution, Rayleigh-Benard, boundary layers | |||||||||
| Event Title: | 2nd International Conference on Turbulence and Interactions 2009 | |||||||||
| Event Location: | Sainte-Luce, Martinique, France | |||||||||
| Event Type: | international Conference | |||||||||
| Event Dates: | 2009-05-29 - 2009-06-02 | |||||||||
| Organizer: | Onera | |||||||||
| HGF - Research field: | Aeronautics, Space and Transport | |||||||||
| HGF - Program: | Transport | |||||||||
| HGF - Program Themes: | Terrestrial Vehicles (old) | |||||||||
| DLR - Research area: | Transport | |||||||||
| DLR - Program: | V BF - Bodengebundene Fahrzeuge | |||||||||
| DLR - Research theme (Project): | V - Next Generation Train (old) | |||||||||
| Location: | Göttingen | |||||||||
| Institutes and Institutions: | Institute of Aerodynamics and Flow Technology > Fluid Systems | |||||||||
| Deposited By: | Kaczorowski, Matthias | |||||||||
| Deposited On: | 26 Nov 2009 15:18 | |||||||||
| Last Modified: | 12 Dec 2013 20:32 |
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