Articles | Volume 5, issue 1
J. Sens. Sens. Syst., 5, 125–136, 2016
https://doi.org/10.5194/jsss-5-125-2016

Special issue: Sensor/IRS2 2015

J. Sens. Sens. Syst., 5, 125–136, 2016
https://doi.org/10.5194/jsss-5-125-2016

Regular research article 06 Apr 2016

Regular research article | 06 Apr 2016

High-speed camera-based measurement system for aeroacoustic investigations

Johannes Gürtler et al.

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Cited articles

Adrian, R. J.: Twenty years of particle image velocimetry, Exp. Fluids, 39, 159–169, 2005.
Bechert, D. W.: Sound absorption caused by vorticity shedding, demonstrated with a jet flow, J. Sound Vib., 70, 389–405, 1980.
Eldredge, J. D. and Dowling, A. P.: The absorption of axial acoustic waves by a perforated liner with bias flow, J. Fluid Mech., 485, 307–335, 2003.
Fischer, A., Büttner, L., Czarske, J., Eggert, M., Grosche, G., and Müller, H.: Investigation of time-resolved single detector Doppler global velocimetry using sinusoidal laser frequency modulation, Meas. Sci. Technol., 18, 2529–2545, 2007.
Fischer, A., König, J., and Czarske, J.: Speckle noise influence on measuring turbulence spectra using time-resolved Doppler global velocimetry with laser frequency modulation, Meas. Sci. Technol., 19, 125402, https://doi.org/10.1088/0957-0233/19/12/125402, 2008.
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Short summary
The interaction of sound and flow enables an efficient noise damping. Understanding this aeroacoustic damping phenomenon requires simultaneous measurement of flow and sound fields. Using a high-speed CMOS camera, two-component flow velocity measurements are performed in a three-dimensional region of interest. The sensor system can simultaneously capture sound and turbulent flow velocity oscillations. The presented measurements reveal that the sound energy is transferred into flow energy.
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