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Optical Engineering

Combined particle image velocimetry and visualization experiments on instabilities in a flat plate boundary layer with zero pressure gradient
Author(s): Markus Fischer; Markus Raffel; Andreas Vogt; Juergen Kompenhans
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Paper Abstract

Quantitative and visual data of artificially forced instabilities are acquired in a flat plate boundary layer in air. For the first time, particle image velocimetry (PIV) allows the instantaneous recording of a complete velocity field. With this technique, quantitative data are obtained within the boundary layer and very close to the wall. By using a light sheet technique it is possible furthermore to obtain visual data. Reproducible and constant conditions in the development of the instabilities are achieved by forcing the boundary layer with well-controlled disturbances. These disturbances are generated with an arrangement for acoustic excitation.

Paper Details

Date Published: 1 April 1994
PDF: 6 pages
Opt. Eng. 33(4) doi: 10.1117/12.163141
Published in: Optical Engineering Volume 33, Issue 4
Show Author Affiliations
Markus Fischer, DLR (Germany)
Markus Raffel, DLR (Germany)
Andreas Vogt, DLR (Germany)
Juergen Kompenhans, DLR (Germany)


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