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Volume 33 Issue 5
Jul.  2022
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GAO Hua, XU Haiting. Computing T matrix of sound scattering by object using the boundary integral equation method[J]. ACTA ACUSTICA, 2008, 33(5): 396-401. DOI: 10.15949/j.cnki.0371-0025.2008.05.002
Citation: GAO Hua, XU Haiting. Computing T matrix of sound scattering by object using the boundary integral equation method[J]. ACTA ACUSTICA, 2008, 33(5): 396-401. DOI: 10.15949/j.cnki.0371-0025.2008.05.002
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Computing T matrix of sound scattering by object using the boundary integral equation method

  • 1 National Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences Beijing 100190;

  • 2 Qingdao Acoustics Laboratory, Chinese Academy of Sciences Qingdao 266023

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  • PACS: 
    • 43.30  (Underwater sound)
  • Received Date: July 25, 2007
  • Revised Date: April 08, 2008
  • Available Online: July 08, 2022
    Graphical Abstract
    • Abstract
  • A T matrix method based on the boundary integral equation (TMM-BIE) is presented for calculating sound scattering by an arbitrary shape rigid object. In this method, the Helmholtz integral equation method (HIEM) is used to calculate the sound pressure on the surface of object instead of the superposition form of basis functions on the surface in the extended boundary condition method (EBCM). The problems in calculating T matrix of large aspect ratios and arbitrary shape object by EBCM are solved. The method is proved by comparison of the calculation results of this method and theoretical results or HIEM to calculate the scattering by a rigid sphere, a rigid finite-cylinder, a cat's-eye structure.
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