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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.
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Friedrich Seiler: He received his ‘Dipl.-Phys.’ degree in 1975 and his ‘Dr.-Ing.’ degree in 1980 from the University of Karlsruhe, Germany. In 1992, he became a lecturer in fluid mechanics, and in 1998, a professor at the same university. Since 1980, he has been a scientist at the French-German Research Institute of Saint-Louis (ISL), France. From 1998, he has been head of the Shock Tube Department.
Marc Havermann: He received his degree as Diplom-Ingenieur in Mechanical Engineering in 1994 and his PhD in Mechanical Engineering in 1999 from the RWTH Aachen, Germany. In 1999 he started as a research scientist in the Shock Tube Dept. of the French-German Research Institute of Saint-Louis, France. His work deals with flows in shock tunnels and optical flow diagnostics.
Alfred George: He was born in Rielasingen, Germany, in 1947. In 1967, he received a technical degree from the Lyceum in Saint-Louis, France. The same year he joined the Franco-German Research Institute ISL in Saint Louis, France. He has been involved in several optical measurement problems applied to high-speed gas dynamics.
Friedrich Leopold: He was born in Freudenstadt, Germany, on April 27, 1963. He received his Dipl.-Ing. Degree in aeronautical engineering from the University Stuttgart, in 1989. In 1993, he received his Doctorate degree from the University Braunschweig. Since 1989, he works in the aerodynamic department of the French-German Research Institute (ISL).
Julio Srulijes: Mechanical Engineering degree, Buenos Aires (RA) in 1972. 1979 Dr.-Ing. degree, University of Karlsruhe (D). 1980-83 University of Essen (D). Since 1984 French-German Research Institute of Saint-Louis (F). He works on gas dynamics of high enthalpy flows at the Shock Tube Laboratory. He participated in the development of several optical measurement techniques.
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Seiler, F., Havermann, M., George, A. et al. Planar velocity visualization in high-speed wedge flow using Doppler Picture Velocimetry (DPV) compared with Particle Image Velocimetry (PIV). J Vis 6, 253–262 (2003). https://doi.org/10.1007/BF03181466
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DOI: https://doi.org/10.1007/BF03181466