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2012 | 121 | 1A | A-132-A-135
Article title

Acoustic Nearfield and Farfield for Vibrating Piston in Geometrical and Intensity Formulations

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Languages of publication
EN
Abstracts
EN
In classic acoustics there are two areas identified around acoustic sources - nearfield and farfield. The nearfield is connected with the Fresnel solution and farfield - the Fraunhofer one. For each regions there are different theoretical formulae for determination of distribution of the chosen acoustic parameter. Unfortunately there is no sharply outlined border between regions. Therefore one of the important problem, is to define approximately conditions for state the border between them. The two attempts for identification are discussed, i.e. geometrical one and intensity ones. The results are shown on the vibrating circular rigid piston case.
Keywords
EN
Publisher

Year
Volume
121
Issue
1A
Pages
A-132-A-135
Physical description
Dates
published
2012-01
Contributors
author
  • Institute of Applied Mechanics, Cracow University of Technology, al. Jana Pawła II 37, 31-864 Cracow, Poland
References
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  • [8] I. Malecki, Theory of Waves and Acoustic Systems, PWN, Warszawa 1964 (in Polish)
  • [9] J.A. Mann, III, J. Tichy, A.J. Romano, J. Acoust. Soc. Am. 82, 17 (1987)
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  • [11] S. Weyna, Surface Distribution of Acoustic Intensity Vector in Small Limited Volume, Szczecin University of Technology, Szczecin 1993 (in Polish)
  • [12] S. Weyna, Propagation of Acoustic Energy of Realistic Sources, WNT, Warszawa 2005 (in Polish)
  • [13] R. Wyrzykowski, Linear Theory of Acoustic Field of Gas Medium, Rzeszów Society of Science Friends, Rzeszów 1970 (in Polish)
Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv121n1a28kz
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