Non-paraxial model for a parametric acoustic array

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F13%3A00206039" target="_blank" >RIV/68407700:21230/13:00206039 - isvavai.cz</a>
Result on the web
<a href="http://link.aip.org/link/?JAS/134/933" target="_blank" >http://link.aip.org/link/?JAS/134/933</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1121/1.4813223" target="_blank" >10.1121/1.4813223</a>

Result language
angličtina
Original language name
Non-paraxial model for a parametric acoustic array
Original language description
This study is concerned with parametric radiation from an arbitrary axisymmetric planar source with a special focus on low-frequency difference-frequency fields. As a model equation accounting for nonlinearity, diffraction and dissipation, the Westerveltequation is used. The difference-frequency-field patterns are calculated in the quasi-linear approximation by the method of successive approximations. A multi-layer integral for calculation of the acoustic field is reduced to a three-dimensional one byemploying an approximate analytical description of the primary field with the use of a multi-Gaussian beam expansion. This integral is subsequently reduced in the paraxial approximation to a one-dimensional form which has previously been published in literature and which represents a means for fast calculations of secondary acoustic fields. The three-dimensional integral is calculated numerically and the numerical results predict nonzero amplitude of the low-frequency field in the vicini
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BI - Acoustics and oscillation
OECD FORD branch
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Project
<a href="/en/project/GAP101%2F12%2F1925" target="_blank" >GAP101/12/1925: New methods of generation and utilization of finite-amplitude standing acoustic waves</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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