Název: Modification of an algebraic bypass-transition model in region near the stagnation point
Autoři: Straka, P. ; Příhoda, Jaromír
Typ dokumentu: Příspěvky z konference
Konference/Akce: Topical Problems of Fluid Mechanics 2011, Praha (CZ), 2011-02-16 / 2011-02-17
Rok: 2011
Jazyk: eng
Abstrakt: An algebraic model of bypass transition was applied for the numerical simulation of flow over the NACA 0012 airfoil. The system of governing equations is formed by the averaged Navier-Stokes equations closed by the k-omega turbulence model. The intemittent character of the transitional flow 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 constitutive relation for the turbulent velocity was modified to improve the prediction near the wall and near the leading edge. The prediction of transitional flow was carried out for the Reynolds number Re = 6x10^5 and free stream turbulence Tu = 0.3%. The agreement of numerical results with experimental data is quite good.
Klíčová slova: bypass transition modelling; flow near the stagnation point; k-omega turbulence model
Číslo projektu: CEZ:AV0Z20760514 (CEP), GAP101/10/1329 (CEP)
Poskytovatel projektu: GA ČR
Zdrojový dokument: Conference Topical Problems of Fluid Mechanics 2011, ISBN 978-80-87012-32-1

Instituce: Ústav termomechaniky AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0198630

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-55799


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav termomechaniky
Konferenční materiály > Příspěvky z konference