Aeroacoustic analysis using natural Helmholtz–Hodge decomposition
Daniel Haufe,Johannes Gürtler,Anita Schulz,Friedrich Bake,Lars Enghardt,and Jürgen Czarske
Daniel Haufe
Laboratory for Measurement and Sensor System Techniques, Department of Electrical Engineering and Information Technology,
TU Dresden, Helmholtzstr. 18, 01069 Dresden, Germany
Laboratory for 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
Laboratory for Measurement and Sensor System Techniques, Department of Electrical Engineering and Information Technology,
TU Dresden, Helmholtzstr. 18, 01069 Dresden, Germany
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The analysis of aeroacoustic phenomena is crucial for deeper understanding of the damping mechanisms of a sound-absorbing bias flow liner. Simultaneous three-component velocity measurements of the superposed sound field and the flow field in a 3-D region of interest with over 4000 measurement points are presented. The natural Helmholtz–Hodge decomposition is applied to separate both fields from the measured velocity field in the spatial domain. This reveals new insight into the aerodynamic flow.
The analysis of aeroacoustic phenomena is crucial for deeper understanding of the damping...
