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Related Experiment Videos

Scattering from a partially fluid-filled, elastic-shelled sphere.

J A Fawcett1

  • 1Defence Research Establishment Atlantic, Dartmouth, Nova Scotia, Canada.

The Journal of the Acoustical Society of America
|March 16, 2001
PubMed
Summary

This study models scattering from a partially fluid-filled sphere using distinct basis functions for the interior and exterior. The approach accurately calculates scattered fields for various fluid fill levels and incident waves.

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Area of Science:

  • Physics
  • Acoustics
  • Computational Electromagnetics

Background:

  • Spherical wave scattering is crucial in acoustics and electromagnetics.
  • Modeling partially filled spherical objects presents unique computational challenges.
  • Accurate simulation requires handling complex fluid-air interfaces within a spherical geometry.

Purpose of the Study:

  • To develop and present a novel computational method for analyzing acoustic scattering from a partially fluid-filled sphere.
  • To provide a framework for calculating the scattered field by coupling different basis function sets.
  • To validate the method through numerical computations across various fill levels and incident wave conditions.

Main Methods:

  • Utilized a basis function set originating at the fluid/air interface for the interior domain.

Related Experiment Videos

  • Employed a separate basis function set centered at the sphere's center for the shell and exterior.
  • Coupled these distinct basis function sets at the shell/interior interface to solve the governing equations.

    • Main Results:

    • Successfully computed the scattered field for a sphere with a fluid-air interior.
    • Demonstrated the method's capability to handle varying degrees of fluid fill.
    • Presented numerical results for different incident plane wave scenarios.

    Conclusions:

    • The developed method provides an effective approach for modeling scattering from partially fluid-filled spheres.
    • The technique allows for accurate prediction of scattered fields under diverse conditions.
    • This work contributes to the understanding of wave interaction with complex spherical geometries.