Modification of an algebraic bypass-transition model for internal flows

0349203 - ÚT 2011 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Straka, P. - Příhoda, Jaromír
Modification of an algebraic bypass-transition model for internal flows.
Topical Problems of Fluid Mechanics 2010. Praha: Ústav termomechaniky, AV ČR, v. v. i., 2010 - (Příhoda, J.; Kozel, K.), s. 139-142. ISBN 978-80-87012-25-3.
[Topical Problems of Fluid Mechanics 2010. Praha (CZ), 10.02.2010-11.02.2010]
Grant CEP: GA ČR(CZ) GAP101/10/1329; GA AV ČR(CZ) IAA200760614
Výzkumný záměr: CEZ:AV0Z20760514
Klíčová slova: internal flows * bypass transition
Kód oboru RIV: BK - Mechanika tekutin

The contribution deals with testing of an algebraic bypass-transition model for shear flows characteristic for turbomachinery. The transition model based on the algebraic equation for the intermittency coefficient is added to the averaged Navier-Stokes equations with the SST turbulence model. The transition onset and length are given by empirical relations. The modified model considers different intermittency coefficient in the transitional boundary layer and in the outer turbulent stream. The model was verified by means of test cases ERCOFTAC covering boundary-layer flow with various free-stream turbulence and pressure gradient.
Trvalý link: http://hdl.handle.net/11104/0189506