Affiliations: French-German Research Institute of Saint-Louis (ISL)
5, Rue du Général Cassagnou, F-68301 Saint-Louis,
France. Tel: +33-3-8969-5042; Fax: +33-3-8969-5048; E-mail:
[email protected]
Abstract: A technique for visualizing a velocity field in an entire plane has
been developed by taking "Doppler Pictures" using Michelson interferometry.
With the Doppler Picture Velocimetry (DPV), information about the instantaneous
and local velocities of tracers passing through a light sheet is available. The
technique for taking and processing the Doppler pictures has been improved
recently and the state-of-the-art of the DPV method will be described with an
application in high-speed fluid flows showing the velocity distribution in a
light sheet plane crossing a supersonic wedge flow generated in the high-energy
shock tunnel STB of ISL. A comparison with Particle Image Velocimetry (PIV)
velocity visualizations is also presented.