Název: On Reynolds-averaged turbulence modeling with immersed boundary method
Autoři: Kubíčková, Lucie ; Isoz, Martin
Typ dokumentu: Příspěvky z konference
Konference/Akce: Topical Problems of Fluid Mechanics 2023, Prague (CZ), 20230222
Rok: 2023
Jazyk: eng
Abstrakt: The immersed boundary (IB) method is an approach in the computational fluid dynamics in which complex geometry conforming meshes are replaced by simple ones and the true simulated geometry is projected onto the simple mesh by a scalar field and adjustment of governing equations. Such an approach is particularly advantageous in topology optimizations (TO) where it allows for substantial speed-up since a single mesh can be used for all the tested topologies. In our previous work, we linked our custom IB variant, the hybrid fictitious domain-immersed boundary method (HFDIB), with a TO framework and successfully carried out an optimization under laminar flow conditions. However, to allow for optimizations of reallife components, the IB approach needs to be coupled with an affordable turbulence modeling. In this contribution, we focus on extending the HFDIB approach by the possibility to perform Reynolds-averaged simulations (RAS). In particular, we implemented the k − ω turbulence model and wall functions for closure variables and velocity.
Klíčová slova: CFD; immersed boundary; OpenFOAM; RAS; wall functions
Zdrojový dokument: Topical Problems of Fluid Mechanics 2023, ISBN 978-80-87012-83-3, ISSN 2336-5781

Instituce: Ústav termomechaniky AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný na externích webových stránkách.
Externí umístění souboru: http://www2.it.cas.cz/fm2015/im/admin/showfile/data/my/Papers/2023/15-TPFM2023.pdf
Původní záznam: https://hdl.handle.net/11104/0349999

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-538536


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav termomechaniky
Konferenční materiály > Příspěvky z konference