Identification methods for vortical structures in turbulent boundary layers
Friday, March 26, 2010 - 2:30pm - 2:45pm
Vortical structures, which align in groups or packets, were proposed as a fundamental structure of turbulent boundary layers more than 50 years ago in the literature. Recently, planar and volumetric velocity measurements obtained by PIV provide direct information on three-dimensional spatial velocity variations which can be used to identify coherent structures. Several identification methods will be discussed.