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François, Daniela Gisele and Radespiel, Rolf and Probst, Axel (2014) Forced synthetic turbulence approach to stimulate resolved turbulence generation in embedded LES. 5th Symposium on Hybrid RANS-LES Methods, 2014-03-19 - 2014-03-21, Houston, USA.
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Official URL: http://mwikicfd.mace.manchester.ac.uk/hrlm/general-information
Abstract
A synthetic turbulence generator is implemented in the DLR TAU-Code, to reduce the grey area that is typical for embedded LES approaches. The selected synthetic turbulence generator builds up a velocity field of fluctuations that reproduces the anisotropy and non-homogeneity of the boundary layer taken as reference from the RANS solution. In addition, the generator is significantly improved in order to reduce the numerical divergence of the generated velocity field and also to provide convective motion of the synthetic eddies. The imple- mentation was tested in a flat plate boundary layer and verified against experimen- tal data for the HGR-01 airfoil. The results show that the implementation shortens the transition distance to fully developed turbulence. The obtained flow profiles for the HGR-01 airfoil compare nicely to available PIV data.
| Item URL in elib: | https://elib.dlr.de/93119/ | ||||||||||||||||
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| Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||
| Additional Information: | Revised Full Papers will be published (Springer Series: "Notes on Numerical Fluid Mechanics and Multidisciplinary Design"). | ||||||||||||||||
| Title: | Forced synthetic turbulence approach to stimulate resolved turbulence generation in embedded LES | ||||||||||||||||
| Authors: |
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| Date: | 2014 | ||||||||||||||||
| Refereed publication: | Yes | ||||||||||||||||
| Open Access: | No | ||||||||||||||||
| Gold Open Access: | No | ||||||||||||||||
| In SCOPUS: | No | ||||||||||||||||
| In ISI Web of Science: | No | ||||||||||||||||
| Series Name: | Conference Proceedings | ||||||||||||||||
| Status: | Published | ||||||||||||||||
| Keywords: | synthetic turbulence, embedded LES, DLR-TAU code, HGR-01 airfoil | ||||||||||||||||
| Event Title: | 5th Symposium on Hybrid RANS-LES Methods | ||||||||||||||||
| Event Location: | Houston, USA | ||||||||||||||||
| Event Type: | international Conference | ||||||||||||||||
| Event Start Date: | 19 March 2014 | ||||||||||||||||
| Event End Date: | 21 March 2014 | ||||||||||||||||
| Organizer: | TEXAS A&M University | ||||||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||
| HGF - Program: | Aeronautics | ||||||||||||||||
| HGF - Program Themes: | fixed-wing aircraft | ||||||||||||||||
| DLR - Research area: | Aeronautics | ||||||||||||||||
| DLR - Program: | L AR - Aircraft Research | ||||||||||||||||
| DLR - Research theme (Project): | L - Simulation and Validation (old) | ||||||||||||||||
| Location: | Göttingen | ||||||||||||||||
| Institutes and Institutions: | Institute of Aerodynamics and Flow Technology > C²A²S²E - Center for Computer Applications in AeroSpace Science and Engineering | ||||||||||||||||
| Deposited By: | Micknaus, Ilka | ||||||||||||||||
| Deposited On: | 12 Dec 2014 14:10 | ||||||||||||||||
| Last Modified: | 24 Apr 2024 19:58 |
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