A NEW METHOD FOR ACOUSTICAL RADIATION PROBLEMS WITH MIXED BOUNDARY VALUES.

Abstract

A series expansion method for the solution of acoustical radiation problems with mixed boundary values is presented. In this method a wavefunction expansion is truncated to include only the number of terms equal to the number of specified boundary values. The solution improves as this number increases, and coeffients may be evaluated through a matrix inversion. The particular case of a radiator on a sphere is treated and results are presented which show that the sound beam is more directive if the remaining portion of the sphere is soft. (Author)

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1969
Accession Number
AD0693319

Entities

People

  • John L. Butler

Tags

DTIC Thesaurus Topics

  • Boundaries
  • Directives
  • Inversion
  • Mathematical Analysis
  • Mathematics
  • Military Publications
  • Radiation

Fields of Study

  • Mathematics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)

Technology Areas

  • Directed Energy