2 edition of Investigation of subharmonic generation by finite-amplitude waves in a rigid-walled tube found in the catalog.
Finite-amplitude standing waves contained within an air filled rigid-walled tube at ambient temperature and pressure were investigated experimentally. The pressure waveform in the tube was analyzed for subharmonic content for comparison with several existing theoretical models. Due to limitations of the experimental apparatus, the only model for which the predicted threshold for subharmonic generation could be exceeded was that of Coppens which predicts subharmonic generation when the strength parameter exceeds 2.0. Strength parameter is defined as M2BetaQ1 where M2 is the Mach number of the driving frequency, Beta = 1.2 in air, and Q1 is the quality facotr associated with the subharmonic resonance. Strength parameters up to 2.89 were investigated and no threshold effect was observed. (Author)
|Statement||John Jay Donnelly|
|Contributions||Naval Postgraduate School (U.S.)|
|The Physical Object|
|Pagination||44 p. :|
|Number of Pages||44|
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Investigation of subharmonic generation by finite-amplitude waves in a rigid-walled Tube. A perturbation expansion is formulated for the one‐dimensional, nonlinear, acoustic‐wave equation with dissipative term describing the viscous and thermal energy losses encountered in a rigid‐walled, closed tube with large length‐to‐diameter ratio.
The resulting set of iterative, linear equations is solved for a finite‐amplitude standing by: Reducing the impact of a vertical refraction by a two-regime model. Investigation of subharmonic generation by finite-amplitude waves in a rigid-walled tube.
Modeling of finite amplitude acoustic waves in closed cavities using the Galerkin method May The Journal of the Acoustical Society of America (4 Pt 1) Investigation of subharmonic generation by finite-amplitude waves in a rigid-walled Tube | Donnelly, John Jay | ISBN: | Kostenloser Versand für alle Bücher mit Versand und Verkauf duch : Taschenbuch.
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