B8.3 - Using a high speed camera for high resolution 3D measurements of sound-flow interaction
- AMA Conferences 2015
2015-05-19 - 2015-05-21
- Proceedings SENSOR 2015
- B8 - Fluid-Structure Interaction Sensing
- A. Döring, J. Gürtler, D. Haufe, J. Czarske, A. Fischer - TU Dresden (Germany), A. Schulz, F. Bake, L. Enghardt - German Aerospace Center (DLR), Berlin (Germany)
- 334 - 339
We present a novel approach of using a high-speed camera to combine a frequency modulated Doppler global velocimetry (FM-DGV) system and a particle image velocimetry (PIV) system in order to monitor the 3D velocity field with an increased spatial resolution of 300 µm. This approach facilitates a simultaneous measurement of all three velocity components with a high measurement rate of 10 kHz. Hence, the sound induced oscillation velocities for tone frequencies of several kHz can be resolved in addition to the mean flow velocity. Therefore, the measurement system is promising for investigating the soundflow interaction, which is demonstrated for the analysis of the sound damping mechanism at a bias flow liner used for aircraft noise reduction.