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Validating the ffowcs williams and hawkings acoustic analogy implementation in antares

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conference contribution
posted on 2016-12-08, 11:26 authored by Danilo Di Stefano, Aldo Rona, Edward Hallf, Christopher L. Morfey, Guillaume Puigt
Progress is presented in the development of a Ffowcs Williams and Hawkings (FW-H) acoustic analogy post-processor for time-resolved Computational Fluid Dynamics (CFD) simulations. The tool is coded in Python and embedded in Antares, a post-treatment package (developed by Cerfacs, France) of wide access and usability for the scientific community. Tests on monopoles, dipoles, and quadrupoles show good predictions of pressure fluctuation and directivity against reference analytical results, validating the software for applications to stationary elementary sources. The proximity of these sources to a corner of the FW-H integration surface is shown to adversely affect the predictions and good agreement with the benchmark sound field is restored by an appropriate sizing and placement of the FW-H surface. Guidelines for obtaining predictions that are substantially independent of the size and placement of the FW-H surface are provided in terms of the spatial resolution of the discretised FW-H surface.

History

Citation

22nd AIAA/CEAS Aeroacoustics Conference, 2016, (AIAA 2016-3059)

Author affiliation

/Organisation/COLLEGE OF SCIENCE AND ENGINEERING/Department of Engineering

Source

22nd AIAA/CEAS Aeroacoustics Conference, Lyon, France, 30 May - 1 June 2016

Version

  • AM (Accepted Manuscript)

Published in

22nd AIAA/CEAS Aeroacoustics Conference

Publisher

AIAA

isbn

978-1-62410-386-5

Copyright date

2016

Available date

2016-12-08

Publisher version

http://arc.aiaa.org/doi/10.2514/6.2016-3059

Temporal coverage: start date

2016-05-30

Temporal coverage: end date

2016-06-01

Language

en

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