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François, Daniela Gisele and Radespiel, Rolf and Probst, Axel (2015) Forced synthetic turbulence approach to stimulate resolved turbulence generation in embedded LES. In: Progress in Hybrid RANS-LES Modelling Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 130. Springer International Publishing. pp. 81-92. doi: 10.1007/978-3-319-15141-0_6. ISBN 978-3-319-15140-3. ISSN 1612-2909.
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Official URL: http://link.springer.com/chapter/10.1007/978-3-319-15141-0_6
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 implementation was tested in a flat plate boundary layer and verified against experimental 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/96151/ | |||||||||||||||
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| Document Type: | Contribution to a Collection | |||||||||||||||
| Additional Information: | Book Subtitle: Papers Contributed to the 5th Symposium on Hybrid RANS-LES Methods, 19-21 March 2014, College Station, A&M University, Texas, USA, Book Part: II, Online ISBN: 978-3-319-15141-0 | |||||||||||||||
| Title: | Forced synthetic turbulence approach to stimulate resolved turbulence generation in embedded LES | |||||||||||||||
| Authors: |
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| Date: | 2015 | |||||||||||||||
| Journal or Publication Title: | Progress in Hybrid RANS-LES Modelling | |||||||||||||||
| Refereed publication: | Yes | |||||||||||||||
| Open Access: | No | |||||||||||||||
| Gold Open Access: | No | |||||||||||||||
| In SCOPUS: | No | |||||||||||||||
| In ISI Web of Science: | No | |||||||||||||||
| Volume: | 130 | |||||||||||||||
| DOI: | 10.1007/978-3-319-15141-0_6 | |||||||||||||||
| Page Range: | pp. 81-92 | |||||||||||||||
| Editors: |
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| Publisher: | Springer International Publishing | |||||||||||||||
| Series Name: | Notes on Numerical Fluid Mechanics and Multidisciplinary Design | |||||||||||||||
| ISSN: | 1612-2909 | |||||||||||||||
| ISBN: | 978-3-319-15140-3 | |||||||||||||||
| Status: | Published | |||||||||||||||
| Keywords: | synthetic turbulence, embedded LES, DLR-TAU code, HGR-01 airfoil | |||||||||||||||
| 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 May 2015 15:34 | |||||||||||||||
| Last Modified: | 12 May 2015 15:34 |
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