Print Email Facebook Twitter Development of the SmartAnswer Demonstrator Title Development of the SmartAnswer Demonstrator: a Didactic Wind Tunnel for Aeroacoustic Applications∗ Author Tamaro, S. (von Karman Institute for Fluid Dynamics) Zamponi, R. (TU Delft Wind Energy; TU Delft Novel Aerospace Materials; von Karman Institute for Fluid Dynamics) Schram, C. (von Karman Institute for Fluid Dynamics) Date 2022 Abstract A small didactic wind tunnel demonstrator has been designed and manufactured at the von Karman Institute for Fluid Dynamics to illustrate the physical principles at stake in flow-induced noise generation, offer an audible perception of the effectiveness of noise-mitigation strategies, and serve as a practical test bench for aeroacoustic education and research. Seven mitigation technologies are embedded in a single facility, which addresses the noise generation by an airfoil, noise propagation in a duct, and noise transmission through a flexible panel. A challenging objective of this facility was to offer a perceptible impression of various aeroacoustic noise mechanisms at low flow speeds and a live assessment of the effectiveness of the noise-reduction technologies. Different approaches combining multiple microphones, advanced signal-processing techniques, and real-time audio feedback have been implemented to this end. The results establish that the demonstrator enables a clear perception of the effectiveness of the noise-mitigation technologies. The facility is also suitable for fast and inexpensive preliminary investigations of future noise-reduction concepts, taking advantage of rapid prototyping techniques. To reference this document use: http://resolver.tudelft.nl/uuid:243efc55-d8d7-4fde-9cdc-2bc379b5a20d DOI https://doi.org/10.2514/6.2022-3060 Publisher American Institute of Aeronautics and Astronautics Inc. (AIAA) ISBN 9781624106644 Source 28th AIAA/CEAS Aeroacoustics Conference, 2022 Event 28th AIAA/CEAS Aeroacoustics Conference, 2022, 2022-06-14 → 2022-06-17, Southampton, United Kingdom Series 28th AIAA/CEAS Aeroacoustics Conference, 2022 Part of collection Institutional Repository Document type conference paper Rights © 2022 S. Tamaro, R. Zamponi, C. Schram Files PDF 6.2022_3060.pdf 20.06 MB Close viewer /islandora/object/uuid:243efc55-d8d7-4fde-9cdc-2bc379b5a20d/datastream/OBJ/view