Print Email Facebook Twitter Numerical Analysis of Metal-Foam Application for Trailing Edge Noise Reduction Title Numerical Analysis of Metal-Foam Application for Trailing Edge Noise Reduction Author Teruna, C. (TU Delft Wind Energy) Manegar, F.A. (University of Siegen) Avallone, F. (TU Delft Wind Energy) Casalino, D. (TU Delft Wind Energy) Ragni, D. (TU Delft Wind Energy) Rubio Carpio, A. (TU Delft Aircraft Noise and Climate Effects) Carolus, Thomas (University of Siegen) Date 2019 Abstract This manuscript presents a numerical investigation of the turbulent boundary layer-trailing edge (TBL-TE) noise reduction with an open-cell porous material. The implementation of the porous media is verified by emulating a facility for characterizing the flow resistivity of the porous material. Subsequently, the porous media is applied on the trailing edge of a NACA 0018 airfoil to examine its capability to mitigate TBL-TE noise. The airfoil is set at zero angle of attack and the chord-based Reynolds number is 2.8 × 10 5. Boundary layer profiles and integral boundary layer quantities have been compared with reference experimental data. The noise reduction obtained with the porous trailing edge at low to mid frequency ranges has been found to be in good agreement with the experiment. However, the simulation is unable to predict the noise increase at high frequency, which is considered due to the neglected surface roughness effects in the adopted porous media model. Conventional beamforming is also used to locate the dominant sound sources. In contrast with the solid trailing edge case, it has been found that the solid-porous interface is the location of the dominant sound source for the porous trailing edge case. To reference this document use: http://resolver.tudelft.nl/uuid:803584a2-5b6d-43df-a709-84309db187da DOI https://doi.org/10.2514/6.2019-2650 Publisher American Institute of Aeronautics and Astronautics Inc. (AIAA) ISBN 978-1-62410-588-3 Source 25th AIAA/CEAS Aeroacoustics Conference: 20-23 May 2019 Delft, The Netherlands Event 25th AIAA/CEAS Aeroacoustics Conference, 2019-05-20 → 2019-05-23, Delft, Netherlands Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type conference paper Rights © 2019 C. Teruna, F.A. Manegar, F. Avallone, D. Casalino, D. Ragni, A. Rubio Carpio, Thomas Carolus Files PDF 6.2019_2650.pdf 5.22 MB Close viewer /islandora/object/uuid:803584a2-5b6d-43df-a709-84309db187da/datastream/OBJ/view