Initial Conditions Contribution in Frequency-Domain BEM Analysis

This work is concerned with the computation of the contribution of initial conditions in two-dimensional (2D) frequency-domain analysis of transient scalar wave propagation problems with the corresponding Boundary Element Method (BEM) formulation. The paper describes how pseudo-forces, represented b...

Full description

Saved in:
Bibliographic Details
Published inComputer modeling in engineering & sciences Vol. 6; no. 1; pp. 31 - 42
Main Authors Mansur, W J, Abreu, A I, Carrer, J A M
Format Journal Article
LanguageEnglish
Published Henderson Tech Science Press 01.01.2004
Subjects
Algorithms
Boundary element method
Fast Fourier transformations
Fourier transforms
Frequency analysis
Frequency domain analysis
Initial conditions
Two dimensional analysis
Wave propagation
Online AccessGet full text

Cover

More Information
Summary:This work is concerned with the computation of the contribution of initial conditions in two-dimensional (2D) frequency-domain analysis of transient scalar wave propagation problems with the corresponding Boundary Element Method (BEM) formulation. The paper describes how pseudo-forces, represented by generalized functions, can replace the initial conditions, related to the potential and its time derivative. The generation of such pseudo-forces is the subject of a detailed discussion. The formulation presented here carries out Discrete Fourier Transform (Direct: DFT, and Inverse: IDFT) via FFT (Fast Fourier Transform) algorithms. At the end of the paper four examples are presented in order to show the potentialities and accuracy of the approach.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ObjectType-Article-2
ObjectType-Feature-1
content type line 23
ISSN:1526-1492
1526-1506
DOI:10.3970/cmes.2004.006.031