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Title: Validating the ffowcs williams and hawkings acoustic analogy implementation in antares
Authors: Di Stefano, Danilo
Rona, Aldo
Hallf, Edward
Morfey, Christopher L.
Puigt, Guillaume
First Published: 1-Jun-2016
Presented at: 22nd AIAA/CEAS Aeroacoustics Conference, Lyon, France, 30 May - 1 June 2016
Start Date: 30-May-2016
End Date: 1-Jun-2016
Publisher: AIAA
Citation: 22nd AIAA/CEAS Aeroacoustics Conference, 2016, (AIAA 2016-3059)
Abstract: 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.
DOI Link: 10.2514/6.2016-3059
ISBN: 978-1-62410-386-5
Version: Post-print
Type: Conference Paper
Rights: Copyright © 2016, AIAA. Deposited with reference to the publisher’s archiving policy available on the SHERPA/RoMEO website.
Appears in Collections:Conference Papers & Presentations, Dept. of Engineering

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