Please use this identifier to cite or link to this item:
doi:10.22028/D291-26511
Title: | A variational multiscale method for turbulent flow simulation with adaptive large scale space |
Author(s): | John, Volker Kindl, Adela |
Language: | English |
Year of Publication: | 2009 |
DDC notations: | 510 Mathematics |
Publikation type: | Other |
Abstract: | In turbulent flows it is only feasible to simulate large flow structures. Variational multiscale (VMS) methods define these flow structures by projections into appropriate function spaces. This paper presents a finite element VMS method which defines the large scale projection space adaptively. The adaption controls the influence of an eddy viscosity model and it is based on the size of the so–called resolved small scales. The adaptive procedure is described in detail. Numerical studies at a turbulent channel flow and a turbulent flow around a cylinder are presented. It is shown that the method selects the large scale space in a correct way and that appropriately chosen parameters improve the results compared to the basic method, which uses the same local large scale space in the whole domain and for all times. |
Link to this record: | urn:nbn:de:bsz:291-scidok-47624 hdl:20.500.11880/26567 http://dx.doi.org/10.22028/D291-26511 |
Series name: | Preprint / Fachrichtung Mathematik, Universität des Saarlandes |
Series volume: | 228 |
Date of registration: | 6-Jun-2013 |
Faculty: | MI - Fakultät für Mathematik und Informatik |
Department: | MI - Mathematik |
Collections: | SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
Files for this record:
File | Description | Size | Format | |
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preprint_228_09.pdf | 432,99 kB | Adobe PDF | View/Open |
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