Density tagging velocimetry

Markus Raffel, Ricardo Hernandez-Rivera, Benjamin Heine, Andreas Schröder, Karen Mulleners
2011 Experiments in Fluids  
Density Tagging Velocimetry, a novel optical technique for point-wise measurement of flow velocity is proposed here. This new method is based on the detection and subsequent tracking of a local density variation deliberately inserted in the flow. The experimental implementation comprising tagging, detection, and velocity evalution reverts to and combines principles of well-known optical measurement techniques. Density Tagging Velocimetry has the potential for inflight application and is
more » ... arly suited for measuring flow velocities in regions where the use of tracer particles is difficult or undesired. The applicability of this new technique is illustrated by a jet flow measurement.
doi:10.1007/s00348-011-1058-6 fatcat:ylznlhqs3nbcpd25x3ptluvvo4