Stability and Dynamics of Flow in a Turbulent Boundary Layer Separation Region

0377796 - ÚT 2013 RIV DE eng C - Conference Paper (international conference)
Uruba, Václav
Stability and Dynamics of Flow in a Turbulent Boundary Layer Separation Region.
Progress in Turbulence and Wind Energy IV. Berlin, Heidelberg: Springer-Verlag, 2012, s. 105-108. Springer Proceedings in Physics, 141. ISBN 978-3-642-28967-5. ISSN 0930-8989.
[iTi 2010 Conference in Turbulence. Bertinoro (IT), 19.09.2010-22.09.2010]
R&D Projects: GA ČR GA101/08/1112; GA ČR GAP101/10/1230
Institutional research plan: CEZ:AV0Z20760514
Institutional support: RVO:61388998
Keywords : boundary layer separation * stability * dynamics
Subject RIV: BK - Fluid Dynamics

Separation of a turbulent boundary layer on a flat plate under adverse pressure gradient was studied experimentally using Time-Resolved PIV technique. The results of spatio-temporal analysis of flow-field in the separation zone are presented. For this purpose, the Proper Orthogonal Decomposition method is used for the dynamical system reduction which is then analyzed using Principal Oscillation Patterns method. The study contributes to understanding mechanisms of a boundary layer separation process. The acquired information could be used to improve strategies of a boundary layer separation control.
Permanent Link: http://hdl.handle.net/11104/0217473