Finite volume and finite element methods applied to 3D laminar and turbulent channel flows

0451302 - ÚT 2016 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
Louda, Petr - Sváček, P. - Kozel, K. - Příhoda, Jaromír
Finite volume and finite element methods applied to 3D laminar and turbulent channel flows.
AIP Conference Proceedings. Vol. 1637. Melville: American Institute of Physics, 2014, s. 607-615. ISBN 978-0-7354-1276-7. ISSN 0094-243X.
[International Conference on Mathematical Problems in Engineering, Aerospace and Sciences /10./. Narvik (NO), 15.07.2014-18.07.2014]
Grant CEP: GA ČR GAP101/10/1230
Institucionální podpora: RVO:61388998
Klíčová slova: backward-facing step * EARSM turbulence model * stabilized finite element method
Kód oboru RIV: BK - Mechanika tekutin

The work deals with numerical simulations of incompressible flow in channels with rectangular cross section. The rectangular cross section itself leads to development of various secondary flow patterns, where accuracy of simulation is influenced by numerical viscosity of the scheme and by turbulence modelling. In this work some developments of stabilized finite element method are presented. Its results are compared with those of an implicit finite volume method also described, in laminar and turbulent flows. It is shown that numerical viscosity can cause errors of same magnitude as different turbulence models. The finite volume method is also applied to 3D turbulent flow around backward facing step and good agreement with 3D experimental results is obtained
Trvalý link: http://hdl.handle.net/11104/0254614