Comparison of several models of the laminar/turbulent transition

0398604 - ÚT 2014 RIV FR eng C - Konferenční příspěvek (zahraniční konf.)
Fürst, J. - Straka, P. - Příhoda, Jaromír - Šimurda, David
Comparison of several models of the laminar/turbulent transition.
EFM12 - EXPERIMENTAL FLUID MECHANICS 2012. Liberec: Technical University of Liberec, 2013 - (Dančová, P.; Novotný, P.). EPJ Web of Conferences, 45. ISBN 978-80-7372-912-7. ISSN 2100-014X.
[International Conference on Experimental Fluid Mechanics /7./. Hradec Králové (CZ), 20.11.2012-23.11.2012]
Grant CEP: GA ČR(CZ) GAP101/10/1329; GA ČR GAP101/12/1271
Institucionální podpora: RVO:61388998
Klíčová slova: bypass transition * algebraic transition model * three-equation k-kL-omega model
Kód oboru RIV: BK - Mechanika tekutin

The contribution deals with modelling of the laminar/turbulent transition using several transition models. Transition models of various types were tested: a) the model with the algebraic equation for the intermittency coefficient according to Straka and Příhoda; b) the three-equation transition model with the transport equation for the energy of non-turbulent fluctuations proposed by Walters and Cokljat; c) the gama-Re model with the transport equation for the intermittency coefficient of Langtry and Menter. The transition models were compared by means of test cases covering both flat-plate boundary-layer flows with various free stream turbulence and the flow over an airfoil including the effect of foregoing wake on the transition. The agreement of numerical results with experimental data is in all cases quite satisfactory.
Trvalý link: http://hdl.handle.net/11104/0227888