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Proceedings Paper

Combined PIV 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 have been acquired in a flat plate boundary layer in air. For the first time the Particle Image Velocimetry (PIV) allows the recording of a complete velocity field instantaneously. With this technique quantitative data have been obtained within the boundary layer also very close to the wall. By using a light sheet technique it was 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: 2 December 1993
PDF: 9 pages
Proc. SPIE 2005, Optical Diagnostics in Fluid and Thermal Flow, (2 December 1993); doi: 10.1117/12.163729
Show Author Affiliations
Markus Fischer, DLR (Germany)
Markus Raffel, DLR (Germany)
Andreas Vogt, DLR (Germany)
Juergen Kompenhans, DLR (Germany)


Published in SPIE Proceedings Vol. 2005:
Optical Diagnostics in Fluid and Thermal Flow
Soyoung Stephen Cha; James D. Trolinger, Editor(s)

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