Finite-amplitude waves in imperfect cavities.
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Authors
DeVall, Rober Ronald.
Subjects
Finite Amplitude Standing Wave
Rigid Walled Cavity
Strength Parameter
Frequency Parameter
Rigid Walled Cavity
Strength Parameter
Frequency Parameter
Advisors
Sanders, J.V.
Date of Issue
1973-12
Date
December 1973
Publisher
Monterey, CA; Naval Postgraduate School
Language
en_US
Abstract
Finite-amplitude standing waves in air at ambient temperatures
contained within a detunable, rigid-walled rectangular
cavity were experimentally investigated. The pressure waveforms
resulting from excitations in the vicinity of the resonances
of the 10 and 010 modes were analyzed for harmonic
content at three different cavity configurations. Similarly,
waveforms of the 110 and 210 modes were analyzed for four
different cavity configurations. These results were compared
to the predictions of a theory of Coppens and Sanders wherein
the resonance frequencies and quality factors of all modes were
experimentally determined from infinitesimal-amplitude measurements.
It was found that in the case of nearly degenerate
modes, coupling within the cavity allowed for the excitation of
modes belonging to families other than that containing the
driven mode. This feature is absent from the theory in its
present form.
Type
Thesis
Description
Series/Report No
Department
Department of Physics and Chemistry
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funding
Format
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.