Chair of Measurement and Sensor System Techniques, Department of Electrical Engineering and Information Technology, TU Dresden, Helmholtzstr. 18, 01069 Dresden, Germany
Daniel Haufe
Chair of Measurement and Sensor System Techniques, Department of Electrical Engineering and Information Technology, TU Dresden, Helmholtzstr. 18, 01069 Dresden, Germany
Anita Schulz
Institute of Propulsion Technology, German Aerospace Center (DLR), 10623 Berlin, Germany
Friedrich Bake
Institute of Propulsion Technology, German Aerospace Center (DLR), 10623 Berlin, Germany
Lars Enghardt
Institute of Propulsion Technology, German Aerospace Center (DLR), 10623 Berlin, Germany
Institute of Fluid Dynamics and Technical Acoustics, TU Berlin, 10623 Berlin, Germany
Jürgen Czarske
Chair of Measurement and Sensor System Techniques, Department of Electrical Engineering and Information Technology, TU Dresden, Helmholtzstr. 18, 01069 Dresden, Germany
Andreas Fischer
Chair of Measurement and Sensor System Techniques, Department of Electrical Engineering and Information Technology, TU Dresden, Helmholtzstr. 18, 01069 Dresden, Germany
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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.
The interaction of sound and flow enables an efficient noise damping. Understanding this...
