Scattering by two spheres: Theory and experiment

Irina Bjørnø, Leif Bjørnø Jensen

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    Extensive studies of scattering of acoustical signals by targets of different regular shapes have formed a useful background for attempts to develop procedures for remote monitoring of suspended materials in marine environments as, for instance, measurements of characteristic parameters of suspended sediments. The scattering properties of single regular-shaped particles have been studied in depth by several authors in the past. However, single particle scattering cannot explain all features of scattering by suspended sediment. When the concentration of particles exceeds a certain limit, multiple particle scattering becomes important. As a first step in the investigation of mutual interactions between several particles, the acoustical scattering by two spheres has been studied theoretically and experimentally and the results are reported in this paper. The study has mainly been focused on three issues: (1) to develop a simplified theory for scattering by two elastical spheres; (2) to measure the scattering by two spheres in a water tank, and (3) to compare the theoretical/numerical results with the measured data. A number of factors influencing multiple scattering, including the geometrical distribution of particles, their shape, size, and material properties are taken into consideration in the studies to be reported. Broadband signals were used for the experimental studies.
    Original languageEnglish
    JournalAcoustical Society of America. Journal
    Issue number5
    Pages (from-to)2866-2866
    Publication statusPublished - 1998
    Event16th International Congress on Acoustics and 135th Meeting of the Acoustical Society of America - Seattle, WA, United States
    Duration: 20 Jun 199826 Jun 1998
    Conference number: 16/135


    Conference16th International Congress on Acoustics and 135th Meeting of the Acoustical Society of America
    CountryUnited States
    CitySeattle, WA

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    Copyright (1998) Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America.


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