1.French-German Research Institute of Saint-Louis (ISL),Saint-Louis,France
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.