A Numerical Study of Acoustic Scattering of a NACA 0012 Airfoil with a Shielding Flap by the Time-Domain Boundary Element Method
Document Type
Conference Paper
Publication Date
2026
DOI
10.2514/6.2026-3213
Publication Title
32nd AIAA/CEAS Aeroacoustics Conference (2026)
Pages
3213 (20 pp.)
Conference Name
32nd AIAA/CEAS Aeroacoustics Conference (2026), 26-29 May 2026, Brussels, Belgium
Abstract
The Time-Domain Boundary Element Method (TDBEM) provides a robust framework for analyzing the interaction between incident acoustic waves and aircraft structures, with the key advantage of generating broadband solutions from a single time-domain simulation. Recent acoustic scattering experiments conducted at the NASA's Langley Research Center Quiet Flow Facility involving a NACA 0012 airfoil equipped with a shielding flap provide an excellent benchmark for numerical validation. In this study, numerical predictions of acoustic scattering by a NACA 0012 airfoil with a NACA 0015 shielding flap are obtained using the TDBEM approach for cases both with and without a uniform mean flow. Comparisons between computational results and experimental measurements are presented in both the time and frequency domains. Results are reported for acoustic pressure time histories, sound pressure level (SPL) spectra, and integrated shielding factors, demonstrating close agreement with the experimental data across both time- and frequency-domain metrics.
Rights
© 2026 American Institute of Aeronautics and Astronautics
This material is declared a work of the U.S. Government and is not subject to copyright protection in the United States. Foreign copyright may apply.
Original Publication Citation
Hu, F. Q., & Nark, D. M. (2026). A numerical study of acoustic scattering of a NACA 0012 airfoil with a shielding flap by the time-domain boundary element method. In, 32nd AIAA/CEAS Aeroacoustics Conference (2026) (Article 3213). American Institute of Aeronautics and Astronautics. https://doi.org/10.2514/6.2026-3213
Repository Citation
Hu, Fang Q. and Nark, Douglas M., "A Numerical Study of Acoustic Scattering of a NACA 0012 Airfoil with a Shielding Flap by the Time-Domain Boundary Element Method" (2026). Mathematics & Statistics Faculty Publications. 340.
https://digitalcommons.odu.edu/mathstat_fac_pubs/340