Název:
TOWARDS PRESSURE GRADIENT SENSITIVE TRANSITIONAL k-kL-omega MODEL: THE NATURAL TRANSITION FOR LOW RE AIRFOILS
Autoři:
Fürst, J. ; Islam, M. ; Příhoda, Jaromír ; Wood, D. Typ dokumentu: Příspěvky z konference Konference/Akce: Topical Problems of Fluid Mechanics 2015, Praha (CZ), 2015-02-11 / 2015-02-13
Rok:
2015
Jazyk:
eng
Abstrakt: The work deals with the development of a pressure gradient sensitive variant of a three-equation RANS model for turbulent and transitional flows. The model is based on the laminar kinetic energy approach by Walters and Cokljat. The revisited model was successfully validated for zero or mild pressure gradient flows with the so-called bypass transition. In the case of natural transition in adverse pressure gradient flows the model usually tends to predict the transition too late, see. The aim of present work is to improve the model for the case of flows with very low free-stream turbulence levels with adverse pressure gradient. As a first step we focus the attention to the onset of linear instability.
Klíčová slova:
laminar kinetic energy; laminar-turbulent transition; turbulence Číslo projektu: GAP101/12/1271 (CEP) Poskytovatel projektu: GA ČR Zdrojový dokument: Topical Problems of Fluid Mechanics 2015 , ISBN 978-80-87012-55-0, ISSN 2336-5781
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/11104/0246361