Quick turnaround prediction of weapons bay cavity acoustics resonance

A. B. Cain; R. E. Epstein; E. J. Kerschen

doi:10.2514/6.1999-1899

Quick turnaround prediction of weapons bay cavity acoustics resonance

A. B. Cain, R. E. Epstein, E. J. Kerschen

Aerospace and Mechanical Engineering

Research output: Contribution to conference › Paper › peer-review

2 Scopus citations

Abstract

Discrete vortex methods are used to capture the essential nonlinearities of vortex roll-up, vortex pairing, and interaction with adjacent walls. The nonlinearity is measured in terms of the deviation from the exponential growth rates as given by linear theory. This analysis is done for several relative phase relationships and a best fit is chosen based on correlation coefficients. New work on the receptivity of a 90 degree corner is also summarized. The approach to this analysis is consistent the previously developed Cavity Acoustics Modeling Software (CAMS) and will be used to refine the prediction of CAMS. Also summarized is the conversion of the Microsoft Visual Basic code to JAVA permitting portability between workstations and the personal computer.

Original language	English (US)
DOIs	https://doi.org/10.2514/6.1999-1899
State	Published - 1999
Event	Aeroacoustics Conference and Exhibit, AIAA/CEAS 1999 - Bellevue, United States Duration: May 10 1999 → May 12 1999

Other

Other	Aeroacoustics Conference and Exhibit, AIAA/CEAS 1999
Country/Territory	United States
City	Bellevue
Period	5/10/99 → 5/12/99

ASJC Scopus subject areas

Engineering(all)

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10.2514/6.1999-1899

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title = "Quick turnaround prediction of weapons bay cavity acoustics resonance",

abstract = "Discrete vortex methods are used to capture the essential nonlinearities of vortex roll-up, vortex pairing, and interaction with adjacent walls. The nonlinearity is measured in terms of the deviation from the exponential growth rates as given by linear theory. This analysis is done for several relative phase relationships and a best fit is chosen based on correlation coefficients. New work on the receptivity of a 90 degree corner is also summarized. The approach to this analysis is consistent the previously developed Cavity Acoustics Modeling Software (CAMS) and will be used to refine the prediction of CAMS. Also summarized is the conversion of the Microsoft Visual Basic code to JAVA permitting portability between workstations and the personal computer.",

author = "Cain, {A. B.} and Epstein, {R. E.} and Kerschen, {E. J.}",

note = "Publisher Copyright: {\textcopyright} 1999 by the American Institute of Aeronautics and Astronautics, Inc.; Aeroacoustics Conference and Exhibit, AIAA/CEAS 1999 ; Conference date: 10-05-1999 Through 12-05-1999",

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doi = "10.2514/6.1999-1899",

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T1 - Quick turnaround prediction of weapons bay cavity acoustics resonance

AU - Cain, A. B.

AU - Epstein, R. E.

AU - Kerschen, E. J.

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Y1 - 1999

N2 - Discrete vortex methods are used to capture the essential nonlinearities of vortex roll-up, vortex pairing, and interaction with adjacent walls. The nonlinearity is measured in terms of the deviation from the exponential growth rates as given by linear theory. This analysis is done for several relative phase relationships and a best fit is chosen based on correlation coefficients. New work on the receptivity of a 90 degree corner is also summarized. The approach to this analysis is consistent the previously developed Cavity Acoustics Modeling Software (CAMS) and will be used to refine the prediction of CAMS. Also summarized is the conversion of the Microsoft Visual Basic code to JAVA permitting portability between workstations and the personal computer.

AB - Discrete vortex methods are used to capture the essential nonlinearities of vortex roll-up, vortex pairing, and interaction with adjacent walls. The nonlinearity is measured in terms of the deviation from the exponential growth rates as given by linear theory. This analysis is done for several relative phase relationships and a best fit is chosen based on correlation coefficients. New work on the receptivity of a 90 degree corner is also summarized. The approach to this analysis is consistent the previously developed Cavity Acoustics Modeling Software (CAMS) and will be used to refine the prediction of CAMS. Also summarized is the conversion of the Microsoft Visual Basic code to JAVA permitting portability between workstations and the personal computer.

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T2 - Aeroacoustics Conference and Exhibit, AIAA/CEAS 1999

Y2 - 10 May 1999 through 12 May 1999

ER -

Quick turnaround prediction of weapons bay cavity acoustics resonance

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