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Acoustic two-dimensional scattering from cylinders using the method of source simulation technique

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Języki publikacji
EN
Abstrakty
EN
In this work the Method of Source Simulation Technique was used to calculate the scattering of a plane wave by a circular cylinder with random distribution of the surface impedance. The scattering and radiation from vibrating bodies can be expressed by a source system that is located within the envelope of the scatterer or radiator. The Method of Comparative Sources, as is shown in this work, provides an appropriate prediction of the sources strength and consequently of the sound field. The efficiency of the method was verified through the comparison between numerical results and experimental data. The calculation of the scattering was performed for the variants of the method: the single-layer method and the one-point multipole method.
Słowa kluczowe
Rocznik
Strony
127--146
Opis fizyczny
Bibliogr. 18 poz., fot., rys., wykr.
Twórcy
  • Universidade Federal do Paraná - Centro Politécnico, Departamento de Engenharia Mecânica, Laboratório de Acústica Ambiental, Curitiba Paraná - BRASIL, CEP: 81531-990, zannin@demec.ufpr.br
Bibliografia
  • [1] Lord Rayleigh, The Theory of sound, The Mamillan Company London 1877 or Dover Publication, New Yoyrk 1945.
  • [2] L. Cremer, Die Synthese de Schallfeldes eines beliebigen festen Körper in Luft mit beliebieger Schnelleverteilung aus Kugel schallfelder, Acustica, 55, 44-46 (1984).
  • [3] R. Kress and A. Mohsen, On the simulation source technique for exterior problems in acoustics, Math. Meth. in the Appl. Sci., 8, 585-597 (1986).
  • [4] M. Heckl, Bemerkung zur Berechnung der Schallabstrahlung nach der Methode der Kugelfeldsynthese, Acustica, 68, 251-257 (1989).
  • [5] M. Heckl, Modern methods in analytical acoustics, Springer-Verlag, London 1992, capitel 10.
  • [6] M. Ochmann, The source simulation technique for acoustic radiation problems, Acustica, 82, 512-527 (1995).
  • [7] W. Wiliams, N. Parke, D. Moran and C. Scherman, Acoustic radiation from a finite cylinder, J. Acoust. Soc. of Am., 36, 2310-2322 (1964).
  • [8] L. Cremer and M. Heckl, Köperschall, Springer-Verlag, Berlin 1996.
  • [9] P. R. Stepahishen, A generalized internal source density method for the forward and backward projection of harmonic pressure fields from complex bodies, J. Acous. Soc. Am., 101, 3270-3272 (1997).
  • [10] M. Ochmann, Die Multipolstrahlersyntese - ein effektives Verfahren zur Berechnung der Schallabstrahlang von schwingenden Strukturen beliebiger Oberflächenimpedanz, Acustica, 72, 177-190 (1990).
  • [11] L. Cremer and M. Wang, Die Synthese eines von einem beliebigen Körper in Luft erzeugten Feldes aus Kugelschallfeldern und deren realisierung in Durchrechnung und Experiment, Acustica, 65, 53-74 (1988).
  • [12] M. Ochmann, The full-field equations for acoustic radiation scattering, J. Acous. Soc. of Am., 105, 2574-2584 (1999).
  • [13] A. D. Pierce, Acoustics - An Introduction to its physical principles and applications, published by the Acoustical Society of America, second printing (1991).
  • [14] P. M. Morse and H. Fesbach, Morse, Methods of theoretical physics, MacGraw-Hill, New York 1953.
  • [15] R. H. Hackman, The transition matrix for acoustic and elastic wave scattering in prolate spheroidal coordinates, J. Acoust. Soc. Amer., 75, 35-45 (1984).
  • [16] M. Abramowitz and I. Stegun, Handbook of mathematical functions, Dover Publ., 1972.
  • [17] P. M. Morse, Vibration and Sound, Phublished by the Acoustical Society of America, fourth printing (1991).
  • [18] M. Heckl, Methoden zur Feldberechnung, 20. Deutsche Jahrestagung für Akustik, Dresden 1994.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BAT3-0004-0043
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