Fast computation of time-dependent acoustic fields

Michael Carley, Ghader Ghorbaniasl

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We present a method for the fast evaluation of time-dependent acoustic fields from complex sources. The technique is based on a fast integration method for the boundary integral arising in a Kirchhoff formulation and requires a small, and roughly constant, computation time to compute a transient signal, at the expense of a pre-processing stage. In our calculations, based on test cases for a single rotor and a counter-rotating open rotor, we find that transient field calculations require an order of magnitude less computational time for the field from an array of~16384 sources, a computational advantage which increases with source number.
Original languageEnglish
Pages (from-to)3963-3970
JournalJournal of the Acoustical Society of America
Issue number5
Publication statusPublished - 23 Nov 2016


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