Transitional intermittency in a rough wall boundary layer

0360702 - ÚT 2012 RIV AT eng A - Abstract
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]
R&D Projects: GA AV ČR(CZ) IAA200760614; GA ČR GA101/08/1112; GA ČR GAP101/10/1230
Institutional research plan: CEZ:AV0Z20760514
Keywords : laminar-turbulent transition * intermittency * surface roughness
Subject RIV: BK - Fluid Dynamics

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.
Permanent Link: http://hdl.handle.net/11104/0198190