Dynamical structure of the turbulent boundary layer on rough surface

0368982 - ÚT 2012 RIV DE eng J - Článek v odborném periodiku
Uruba, Václav - Jonáš, Pavel - Hladík, Ondřej
Dynamical structure of the turbulent boundary layer on rough surface.
Proceedings in Applied Mathematics and Mechanics. Roč. 11, č. 1 (2011), s. 603-604. ISSN 1617-7061
Grant CEP: GA ČR GA101/08/1112; GA ČR GAP101/10/1230
Výzkumný záměr: CEZ:AV0Z20760514
Klíčová slova: turbulent boundary layer * rough wall * hairpin vortex
Kód oboru RIV: BK - Mechanika tekutin
http://onlinelibrary.wiley.com/doi/10.1002/pamm.201110291/abstract

The experiments on structure of turbulent boundary layer on the plane rough wall without pressure gradient are presented. Sand roughness of the wall is considered. Measurements are carried out using Time-Resolved PIV technique in planes parallel and perpendicular to the wall. The results on rough wall are compared with the base case of boundary layer on smooth wall. Hairpin vortices have been detected. Topology and typical size of those structures substantially differ in the cases in question.
Trvalý link: http://hdl.handle.net/11104/0203166