Numerical alogorithms for acoustic integrals the devil is in the details

Research output: Contribution to conferencePaper

28 Citations (Scopus)

Abstract

The accurate prediction of the aeroacoustic field generated by aerospace vehicles or nonaerospace machinery is necessary for designers to control and reduce source noise. Powerful computational aeroacoustic methods, based on various acoustic analogies (primarily the Lighthill acoustic analogy) and Kirchhoff methods, have been developed for prediction of noise from complicated sources, such as rotating blades. Both methods ultimately predict the noise through a numerical evaluation of an integral formulation. In this paper, we consider three generic acoustic formulations and several numerical algorithms that have been used to compute the solutions to these formulations. Algorithms for retarded-time formulations are the most efficient and robust, but they are difficult to implement for supersonic-source motion. Collapsing-sphere and emission-surface formulations are good alternatives when supersonic source motion is present, but the numerical implementations of these formulations are more computationally demanding. New algorithms—which utilize solution adaptation to provide a specified error level—are needed.

Original languageEnglish (US)
DOIs
StatePublished - Jan 1 1996
Event2nd AIAA/CEAS Aeroacoustics Conference, 1996 - State College, United States
Duration: May 6 1996May 8 1996

Other

Other2nd AIAA/CEAS Aeroacoustics Conference, 1996
CountryUnited States
CityState College
Period5/6/965/8/96

Fingerprint

Acoustics
Computational aeroacoustics
Aerospace vehicles
Aeroacoustics
Acoustic noise
Machinery

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Aerospace Engineering

Cite this

Brentner, K. S. (1996). Numerical alogorithms for acoustic integrals the devil is in the details. Paper presented at 2nd AIAA/CEAS Aeroacoustics Conference, 1996, State College, United States. https://doi.org/10.2514/6.1996-1706
Brentner, Kenneth S. / Numerical alogorithms for acoustic integrals the devil is in the details. Paper presented at 2nd AIAA/CEAS Aeroacoustics Conference, 1996, State College, United States.
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Brentner, KS 1996, 'Numerical alogorithms for acoustic integrals the devil is in the details' Paper presented at 2nd AIAA/CEAS Aeroacoustics Conference, 1996, State College, United States, 5/6/96 - 5/8/96, . https://doi.org/10.2514/6.1996-1706

Numerical alogorithms for acoustic integrals the devil is in the details. / Brentner, Kenneth S.

1996. Paper presented at 2nd AIAA/CEAS Aeroacoustics Conference, 1996, State College, United States.

Research output: Contribution to conferencePaper

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Brentner KS. Numerical alogorithms for acoustic integrals the devil is in the details. 1996. Paper presented at 2nd AIAA/CEAS Aeroacoustics Conference, 1996, State College, United States. https://doi.org/10.2514/6.1996-1706