Acoustic waveform singularities from supersonic rotating surface sources

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

This paper discusses the analytical characteristics of waveforms produced by rotating surface sources with tip Mach number > 1. The analysis covers both monopole and quadrupole sources that have the greatest importance for prediction of high-speed rotor noise. By using idealized source distributions over the rectangular surfaces, it is shown that the Lighthill/Curle analogy with time derivatives taken outside the integrals poses no additional difficulty attributable to numerical error. The integrals themselves require careful analysis of critical points in the integrand so that an adaptive integration grid can be developed for each time step.

Original languageEnglish (US)
Pages (from-to)387-394
Number of pages8
JournalAIAA Journal
Volume29
Issue number3
StatePublished - Mar 1991

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Acoustics
Mach number
Rotors
Derivatives

ASJC Scopus subject areas

  • Aerospace Engineering

Cite this

Acoustic waveform singularities from supersonic rotating surface sources. / Wells, Valana.

In: AIAA Journal, Vol. 29, No. 3, 03.1991, p. 387-394.

Research output: Contribution to journalArticle

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