Document Type

Conference Paper

Publication Date

2021

DOI

10.2514/6.2021-2201

Pages

1-24

Conference Name

AIAA Aviation 2021 Forum, August 2-6, 2021, Virtual

Abstract

As aircraft noise constraints become more stringent and the number/mixture of aircraft configurations grows, it becomes more important to understand the interaction of individual aircraft noise sources with nearby aircraft structures. Understanding these interactions and exploring possible approaches to mitigate or exploit their acoustic impact is essential for overcoming key noise barriers. This paper describes the further validation of a time domain boundary element approach for the prediction of the interactions between incident noise sources and nearby aircraft structures. Predictions were completed for multiple source locations and comparisons of these results with measured data are presented. Overall, very good agreement between the predicted and measured quantities was obtained in both the pressure time histories and pressure spectra. The effects of surface mesh resolution and source waveform are also presented. The very promising results demonstrate the capabilities of the time domain methodology employed in this study and provide further confidence in its continued development and application in future studies.

Comments

This material is declared a work of the U.S. Government and is not subject to copyright protection in the United States.

Video presentation available at: https://doi.org/10.2514/6.2021-2201.vid

Original Publication Citation

Nark, D. M., & Hu, F. Q. (2021). Time domain boundary element method prediction of noise shielding by a NACA 0012 airfoil. AIAA Aviation 2021 Forum, August 2-6, 2021, Virtual. https://doi.org/10.2514/6.2021-2201

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