EPJ Web of Conferences
Volume 45, 2013EFM12 – Experimental Fluid Mechanics 2012
|Number of page(s)||6|
|Published online||09 April 2013|
Comparison of several models of the laminar/turbulent transition
1 Fac. of Mech. Eng., Czech Technical University in Prague, Czech Republic
2 Aerospace Research and Test Establishment, Plc, Prague, Czech Republic
3 Institute of Thermomechanics AS CR, v.v.i., Prague, Czech Republic
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 Pøíhoda; b) the three-equation transition model with the transport equation for the energy of non-turbulent fluctuations proposed by Walters and Cokljat; c) the γ-Reθ model with the transport equation forthe 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.
© Owned by the authors, published by EDP Sciences, 2013
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