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Knopp, Tobias and Zhang, Xiaoqin and Lube, Gert (2010) Assessment of resolution quality for LES. EUROMECH 504 Large Eddy Simulation for Aerodynamics and Aeroacoustics, 23.-25. Mar. 2009, Muenchen; Germany.
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Abstract
We attempt to assess the resolution quality of Large-Eddy Simulation (LES) using single-grid estimators. We perform a study of LES on successively refined meshes for turbulent channel flow at Re_tau=4800 and for flow over a backward-facing step at Re_h=37500. Refinement indicators (or sensors) based on (i) resolved turbulent kinetic energy and (ii) resolved turbulent shear stress are evaluated. LES on successively refined meshes shows a clear trend of ''convergence'' for mean and fluctuation velocity profiles and that the quality of spatial resolution can be assessed by these two sensors for attached boundary layers and for free-shear layers.
| Item URL in elib: | https://elib.dlr.de/67116/ | ||||||||||||
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| Document Type: | Conference or Workshop Item (Speech) | ||||||||||||
| Title: | Assessment of resolution quality for LES | ||||||||||||
| Authors: |
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| Date: | 2010 | ||||||||||||
| Refereed publication: | No | ||||||||||||
| Open Access: | Yes | ||||||||||||
| Gold Open Access: | No | ||||||||||||
| In SCOPUS: | No | ||||||||||||
| In ISI Web of Science: | No | ||||||||||||
| Status: | Published | ||||||||||||
| Keywords: | Large-eddy simulation; channel flow; backward facing step; wall-functions; grid convergence study | ||||||||||||
| Event Title: | EUROMECH 504 Large Eddy Simulation for Aerodynamics and Aeroacoustics | ||||||||||||
| Event Location: | Muenchen; Germany | ||||||||||||
| Event Type: | international Conference | ||||||||||||
| Event Dates: | 23.-25. Mar. 2009 | ||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||
| HGF - Program: | Aeronautics | ||||||||||||
| HGF - Program Themes: | Aircraft Research (old) | ||||||||||||
| DLR - Research area: | Aeronautics | ||||||||||||
| DLR - Program: | L AR - Aircraft Research | ||||||||||||
| DLR - Research theme (Project): | L - Concepts & Integration (old) | ||||||||||||
| Location: | Göttingen | ||||||||||||
| Institutes and Institutions: | Institute of Aerodynamics and Flow Technology > CASE | ||||||||||||
| Deposited By: | Knopp, Dr.rer.nat. Tobias | ||||||||||||
| Deposited On: | 21 Dec 2010 15:09 | ||||||||||||
| Last Modified: | 31 Jul 2019 19:29 |
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