Počet záznamů: 1  

Dynamical structure of the turbulent boundary layer on rough surface

  1. 1. 0368982 - UT-L 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

    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