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Experiments in Fluids

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01.02.2011 | Research Article

Non-intrusive generation of instability waves in a planar hypersonic boundary layer

verfasst von: D. Heitmann, C. Kähler, R. Radespiel, T. Rödiger, H. Knauss, S. Wagner

Erschienen in: Experiments in Fluids | Ausgabe 2/2011

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Abstract

The aim of this work is to show the possibility of non-intrusively exciting second-mode instability waves with arbitrary frequency and amplitude in a hypersonic, planar boundary layer, by means of optical methods. Surface heat flux sensors were used to measure natural and artificially excited instability waves on a flat plate at zero angle of attack. The measurements were made using a stream-wise array of flush-mounted high-frequency heat flux sensors. In addition, surface pressure sensors were applied and show the instability waves, as well. The possibility to generate such waves by locally heating the model surface is shown.

Vorheriger Artikel Mixing in a supersonic COIL laser: influence of trip jets

Nächster Artikel Effect of experimental parameters and image noise on the error levels in simultaneous velocity and temperature measurements using molecular tagging velocimetry/thermometry (MTV/T)

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Titel: Non-intrusive generation of instability waves in a planar hypersonic boundary layer
verfasst von: D. Heitmann
C. Kähler
R. Radespiel
T. Rödiger
H. Knauss
S. Wagner
Publikationsdatum: 01.02.2011
Verlag: Springer-Verlag
Erschienen in: Experiments in Fluids / Ausgabe 2/2011
Print ISSN: 0723-4864
Elektronische ISSN: 1432-1114
DOI: https://doi.org/10.1007/s00348-010-0949-2

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