Original title: Application of the algebraic bypass-transition model for internal and external flows
Authors: Straka, P. ; Příhoda, Jaromír
Document type: Papers
Conference/Event: Experimental Fluid Mechanics 2010, Liberec (CZ), 2010-11-24 / 2010-11-26
Year: 2010
Language: eng
Abstract: A modified algebraic model of bypass transition was implemented into the in-house numerical code for the simulation of 2D compressible turbulent flow using the RANS equations and the k-omega turbulence model. The intemittent character of flow in the transition region is described by the algebraic relation for the intermittency coefficient and by empirical relations for the onset and the length of the transition region. The modified algebraic model considers different intermittency coefficient in the boundary layer and in the outer turbulent stream. The proposed model was verified by means of test cases ERCOFTAC covering boundary-layer flow with various free-stream turbulence and pressure gradient. Further, the model was applied for the simulation of the transitional flow through a turbine blade cascade and around the NACA 0012 aerofoil.
Keywords: bypass transition modelling; internal and external flows; k-omega turbulence model
Project no.: CEZ:AV0Z20760514 (CEP), GAP101/10/1329 (CEP), IAA200760614 (CEP)
Funding provider: GA ČR, GA AV ČR
Host item entry: International Conference Experimental Fluid Mechanics 2010, ISBN 978-80-7372-670-6

Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0190891

Permalink: http://www.nusl.cz/ntk/nusl-42091


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Research > Institutes ASCR > Institute of Thermomechanics
Conference materials > Papers