Wetzel, Tim and Wagner, Claus (2018) Subgrid scale modelling of Relaminarization Effects in a differentially heated channel. In: New Results in Numerical and Experimental Fluid Mechanics XI, 136, pp. 499-508. Springer International Publishing AG. 20th STAB/DGLR Symposium Braunschweig, 09.-11. Nov. 2016, Braunschweig, Deutschland. DOI: 10.1007/978-3-319-64519-3 ISBN 978-3-319-64518-6 ISSN 1612-2909
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Official URL: https://www.tu-braunschweig.de/stab2016
Abstract
Turbulent mixed convection in a differentially heated vertical channel is simulated by means of direct numerical simulation and large eddy simulation. With regard to the LES different subgrid-scale models are compared and their ability to predict the flow is analysed. The comparison is based on statistical moments as well as two-point correlations that show the models' abilities to represent the sizes of flow structures. A newly proposed local formulation for the classical Smagorinsky SGS model has been identified as the best choice for mixed convection flows, although it can still be improved. The importance of the accuracy of SGS heat flux models is shown to be negligible when the momentum transport is not predicted properly. Their influence can even lead to deviations in both momentum and heat transport as shown with the classical dynamic Smagorinsky model in combination with different SGS heat flux models.
Item URL in elib: | https://elib.dlr.de/117779/ | ||||||||||||||||
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Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||
Additional Information: | ISSN 1860-0824 (electronic); ISBN 978-3-319-64519-3 (eBook); https://doi.org/10.1007/978-3-319-64519-3_45 | ||||||||||||||||
Title: | Subgrid scale modelling of Relaminarization Effects in a differentially heated channel | ||||||||||||||||
Authors: |
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Date: | 2018 | ||||||||||||||||
Journal or Publication Title: | New Results in Numerical and Experimental Fluid Mechanics XI | ||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||
Open Access: | No | ||||||||||||||||
Gold Open Access: | No | ||||||||||||||||
In SCOPUS: | No | ||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||
Volume: | 136 | ||||||||||||||||
DOI : | 10.1007/978-3-319-64519-3 | ||||||||||||||||
Page Range: | pp. 499-508 | ||||||||||||||||
Editors: |
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Publisher: | Springer International Publishing AG | ||||||||||||||||
Series Name: | Notes on Numerical Fluid Mechanics and Multidisciplinary Design 136 | ||||||||||||||||
ISSN: | 1612-2909 | ||||||||||||||||
ISBN: | 978-3-319-64518-6 | ||||||||||||||||
Status: | Published | ||||||||||||||||
Keywords: | Turbulenz, DNS, LES, Kanalströmung, Wärmestransport | ||||||||||||||||
Event Title: | 20th STAB/DGLR Symposium Braunschweig | ||||||||||||||||
Event Location: | Braunschweig, Deutschland | ||||||||||||||||
Event Type: | national Conference | ||||||||||||||||
Event Dates: | 09.-11. Nov. 2016 | ||||||||||||||||
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 III (old) | ||||||||||||||||
Location: | Göttingen | ||||||||||||||||
Institutes and Institutions: | Institute for Aerodynamics and Flow Technology > Fluid Systems, GO | ||||||||||||||||
Deposited By: | Bachmann, Barbara | ||||||||||||||||
Deposited On: | 24 Jan 2018 12:19 | ||||||||||||||||
Last Modified: | 24 May 2018 11:33 |
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