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Kath, Christian and Wagner, Claus (2014) DNS and LES of turbulent mixed convection in the minimal flow unit. In: New Results in Numerical and Experimental Fluid Mechanics IX Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 124. Springer Verlag, Cham Heidelberg New York Dordrecht London. pp. 123-131. doi: 10.1007/978-3-319-03158-3_13. ISBN 978-3-319-03157-6. ISSN 1612-2909.
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Official URL: http://link.springer.com/chapter/10.1007/978-3-319-03158-3_13
Abstract
We performed Direct Numerical Simulations (DNS) and Large Eddy Simulation (LES) of turbulent mixed convection in the minimal flow unit. DNS of turbulent isothermal channel flow have been conducted to demonstrate the predictive capability of the second order accurate finite volume method we used. For the mixed convection case we obtained that the turbulence intensity increases due to bouyancy. Consequently, we reduced the spanwise width of the domain to show that turbulence can be sustained for mixed convection. Additionally, we launched a LES of mixed convection with the dynamic Smagorinsky model. The obtained LES results agree well with the corresponding DNS data.
| Item URL in elib: | https://elib.dlr.de/78675/ | ||||||||||||||||||||||||||||
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| Document Type: | Contribution to a Collection | ||||||||||||||||||||||||||||
| Additional Information: | DOI: 10.1007/978-3-319-03158-3_13, Online ISBN: 978-3-319-03158-3, ISSN 1860-0824 (electronic), Library of Congress Control Number: 2013957123 | ||||||||||||||||||||||||||||
| Title: | DNS and LES of turbulent mixed convection in the minimal flow unit | ||||||||||||||||||||||||||||
| Authors: |
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| Date: | 2014 | ||||||||||||||||||||||||||||
| Journal or Publication Title: | New Results in Numerical and Experimental Fluid Mechanics IX | ||||||||||||||||||||||||||||
| Refereed publication: | Yes | ||||||||||||||||||||||||||||
| Open Access: | No | ||||||||||||||||||||||||||||
| Gold Open Access: | No | ||||||||||||||||||||||||||||
| In SCOPUS: | No | ||||||||||||||||||||||||||||
| In ISI Web of Science: | No | ||||||||||||||||||||||||||||
| Volume: | 124 | ||||||||||||||||||||||||||||
| DOI: | 10.1007/978-3-319-03158-3_13 | ||||||||||||||||||||||||||||
| Page Range: | pp. 123-131 | ||||||||||||||||||||||||||||
| Editors: |
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| Publisher: | Springer Verlag, Cham Heidelberg New York Dordrecht London | ||||||||||||||||||||||||||||
| Series Name: | Notes on Numerical Fluid Mechanics and Multidisciplinary Design | ||||||||||||||||||||||||||||
| ISSN: | 1612-2909 | ||||||||||||||||||||||||||||
| ISBN: | 978-3-319-03157-6 | ||||||||||||||||||||||||||||
| Status: | Published | ||||||||||||||||||||||||||||
| Keywords: | Direct Numerical Simulation, Large Eddy Simulation, turbulent mixed convection, minimal flow unit, coherent structures, low-speed streak | ||||||||||||||||||||||||||||
| 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 - Project Next Generation Train II (old) | ||||||||||||||||||||||||||||
| Location: | Göttingen | ||||||||||||||||||||||||||||
| Institutes and Institutions: | Institute of Aerodynamics and Flow Technology > Fluid Systems | ||||||||||||||||||||||||||||
| Deposited By: | Kath, Christian | ||||||||||||||||||||||||||||
| Deposited On: | 18 Mar 2014 14:11 | ||||||||||||||||||||||||||||
| Last Modified: | 18 Mar 2024 11:54 |
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