Acoustic velocity formulation for sources in arbitrary motion

G. Ghorbaniasl, M. Carley, C. Lacor

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)

Abstract

This paper deals with the acoustic velocity field simulation generated by interaction of flow with moving bodies. Starting from the Ffowcs Williams and Hawkings equation, an analytical formulation of the acoustic velocity is derived for sources in arbitrary motion. This makes the imposition of the boundary condition on a (rigid) scattering surface much more straightforward, as, if the traditional pressure formulation is used, then the pressure gradient must be calculated. Computational results for a pulsating sphere, dipole source, and a propeller case with subsonic tips verify this formulation.
Original languageEnglish
Pages (from-to)632-642
Number of pages11
JournalAIAA Journal
Volume51
Issue number3
DOIs
Publication statusPublished - 1 Mar 2013

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