Transitional intermittency in a rough wall boundary layer

0360702 - ÚT 2012 RIV AT eng A - Abstrakt
Hladík, Ondřej - Jonáš, Pavel - Mazur, Oton - Uruba, Václav
Transitional intermittency in a rough wall boundary layer.
82nd Annual Scientific Conference of the International Association of Applied Mathematics and Mechanics. Graz: Graz University of Technology, 2011 - (Brenn, G.). s. 264-264. ISBN 978-3-85125-145-6.
[Annual Scientific Conference of the International Association of Applied Mathematics and Mechanics /82./. 18.04.2011-21.04.2011, Graz]
Grant CEP: GA AV ČR(CZ) IAA200760614; GA ČR GA101/08/1112; GA ČR GAP101/10/1230
Výzkumný záměr: CEZ:AV0Z20760514
Klíčová slova: laminar-turbulent transition * intermittency * surface roughness
Kód oboru RIV: BK - Mechanika tekutin

The distributions of the transitional intermittency factor are determined from the measurement of the mean velocity derivative very closely to the flat plate covered by sand papers with different grits. The roughness Reynolds numbers (defined with the corresponding length of the sand-grain type roughness) of the investigating plates gain the values k+ = 4.6, 5.7 and 8.7.
Trvalý link: http://hdl.handle.net/11104/0198190