Benchmarking of the NACA 633-018 Trailing-Edge Noise in a Broad Reynolds Number Range as Part of the IEA Task 39

G. Vergés i Plaza, Andreas Fischer, Oliver Lylloff, Christian Bak, Anders S. Olsen, S. Luesutthiviboon, L.T. Lima Pereira, D. Ragni, F. Avallone, More Authors

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

1 Citation (Scopus)
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An experimental aero-acoustic characterisation of the NACA 63 3-018 airfoil is presented in this study, featuring trailing-edge noise emissions with and without serrations. Measurements have been carried out for a chord-based Reynolds number range between 0.18 × 10 6 and 4.8 × 10 6 . Two airfoil models with different chord lengths have been tested in five different wind tunnels. The goal is to compare the measurements in different facilities, quantify the uncertainties, and establish a validation database that can serve as a benchmark for computational studies. The tests have been performed with clean and forced-transition boundary layers for a variety of angles of attack. The effect on the spectral slope and peak levels is evaluated. Scaling laws have been applied to compare different test conditions. The quality and nature of the collapse, as well as the applicability limits of the scaling, are examined. Different serration geometries have been tested at different flap angles. The noise reduction dependence on the aerodynamic loading is discussed. This work is based on an initiative of Task 39 "Quiet Wind Turbine Technology" of the Technology Collaboration Programme (TCP) of the International Energy Agency (IEA).

Original languageEnglish
Title of host publication28th AIAA/CEAS Aeroacoustics 2022 Conference
Number of pages24
ISBN (Electronic)978-1-62410-664-4
Publication statusPublished - 2022
Event28th AIAA/CEAS Aeroacoustics 2022 Conference - Southampton, United Kingdom
Duration: 14 Jun 202217 Jun 2022
Conference number: 28

Publication series

Name28th AIAA/CEAS Aeroacoustics Conference, 2022


Conference28th AIAA/CEAS Aeroacoustics 2022 Conference
Country/TerritoryUnited Kingdom


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