Lagrangian coherent structures in the flow field of a fluidic oscillator

Lagrangian coherent structures in the flow field of a fluidic oscillator Moritz Sieber, Chair of Fluid Dynamics, Hermann-Föttinger-Institut, Technische Universität Berlin, Berlin, Germany Florian Ostermann, Chair of Fluid Dynamics, Hermann-Föttinger-Institut, Technische Universität Berlin, Berlin, Germany Rene Woszidlo, The Boeing Company, Boeing Research and Technology, St. Louis, USA Kilian Oberleithner, Chair of Fluid Dynamics, Hermann-Föttinger-Institut, Technische Universität Berlin, Berlin, Germany C. Oliver Paschereit, Chair of Fluid Dynamics, Hermann-Föttinger-Institut, Technische Universität Berlin, Berlin, Germany DOI: The internal flow of a fluidic oscillator together with its sweeping jet in the external flow field is captured by particle image velocimetry. The entire flow field is composed from several measurement domains concatenated to a global picture. The oscillatory motion in the individual measurements is inferred from simultaneous pressur