Planar Velocity Visualization in High-Speed Wedge Flow using Doppler Picture Velocimetry (DPV) compared with Particle Image Velocimetry (PIV)

Article type: Research Article

Authors: Seiler, F. | Havermann, M. | George, A. | Leopold, F. | Srulijes, J.

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: seiler@isl.tm.fr

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.

Keywords: Light sheet, Tracer, Wedge flow, DPV picture, PIV image

Journal: Journal of Visualization, vol. 6, no. 3, pp. 253-262, 2003