Validation of Numerical Models for Transitional Flows on Airfoils

0480948 - ÚT 2018 RIV DE eng C - Konferenční příspěvek (zahraniční konf.)
Příhoda, Jaromír - Straka, P. - Fürst, J. - Popelka, L. - Šimurda, David
Validation of Numerical Models for Transitional Flows on Airfoils.
XXXIII OSTIV Congress Program and Proceedings. Braunschweig: TU Braunschweig – Niedersächsisches Forschungszentrum für Luftfahrt, 2017 - (Radespiel, R.), s. 39-42. ISBN 978-3-928628-85-3.
[OSTIV Congress /33./. Benalla, Victoria (AU), 08.01.2017-13.01.2017]
Institucionální podpora: RVO:61388998
Klíčová slova: transition * separation bubble * airfoils
Obor OECD: Fluids and plasma physics (including surface physics)
http://ostiv.org/files/ostiv-docs/news/Ostiv_Book_long_final.pdf

Transition models based on various approaches were tested for transitional flows at relatively low free-stream turbulence on airfoils. The modified algebraic model of Fürst et al. (2013) connected with the EARSM model of Hellsten (2004) gives acceptable results in all tested cases. The k-kL-omega model predicts in some cases the transition onset shift downstream which leads to the laminar separation in the decelerated flow and to the transition in the separation bubble. Moreover, comparison with XFOIL program based on the e^n method was drawn.
Trvalý link: http://hdl.handle.net/11104/0279590