Accession Number:

AD0716019

Title:

A Test of the Capabilities of CHIEF in the Numerical Calculation of Acoustic Radiation from Arbitrary Surfaces

Descriptive Note:

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s):

Report Date:

1970-11-12

Pagination or Media Count:

28.0

Abstract:

The computer program CHIEF was designed by Schenck and Barach of the Naval Undersea Research and Development Center to obtain approximate solutions to exterior steady-state acoustic radiation problems for surfaces of arbitrary shape vibrating with a prescribed normal velocity. To test its capabilities as a research tool, CHIEF was applied to several problems for which accurate answers have been obtained using harmonic expansions. The accuracy and computation time of the results using CHIEF are discussed in terms of the surface subdivision scheme and the number of Gaussian quadrature points used to evaluate the Helmholtz integrals. In addition, new input subroutines to CHIEF which provide numerous geometrical options are also discussed.

Subject Categories:

  • Computer Programming and Software
  • Acoustic Detection and Detectors
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE