NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Two-dimensional radiation and scattering at short wave lengthIn the present investigation of radiation and scattering by objects when the wavelengths are much smaller than the characteristic dimensions of the radiator or scatterer, the boundary-element method is used to obtain computational accuracy and efficiency. The approach employed for wavelengths less than 5 percent of object characteristic dimensions involves cubic elements, approximate polynomial and asymptotic evaluations of the fundamental solution, and a tailoring of the order of the Gaussian quadrature according to the local demands dictated by the distance between sending and receiving points. The method addresses the propagation of low-frequency sound over large terrain features.
Document ID
19900057652
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Yoon, W. S.
(Missouri Univ. Rolla, MO, United States)
Park, J. M.
(Missouri Univ. Rolla, MO, United States)
Eversman, W.
(Missouri-Rolla, University Rolla, United States)
Date Acquired
August 14, 2013
Publication Date
July 1, 1990
Publication Information
Publication: ASME, Transactions, Journal of Vibration and Acoustics
Volume: 112
ISSN: 0739-3717
Subject Category
Acoustics
Accession Number
90A44707
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available