REVIEW OF SOME ACOUSTICAL SOURCE PROBLEMS AND FAR FIELD INTEGRATION METHODS,

Abstract

The report is intended as preparation for studying problems of sound refraction by velocity discontinuities or gradients. One ultimate application might be to the refraction of jet noise as it passes from the moving jet into still air. Fourier integral methods are applied to the construction of stationary and moving acoustical sources. A variation of the 'method of stationary phase' is used for evaluation of the far field integrals. (Author)

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1968
Accession Number
AD0682118

Entities

People

  • B. B. Graham
  • E. W. Graham

Organizations

  • Boeing

Tags

DTIC Thesaurus Topics

  • Construction
  • Discontinuities
  • Far Field
  • Integrals
  • Refraction
  • Stationary
  • Test And Evaluation

Fields of Study

  • Physics

Readers

  • Acoustics.
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Systems Analysis and Design