A 2.5D TRACTION BOUNDARY ELEMENT METHOD FORMULATION APPLIED TO THE STUDY OF WAVE PROPAGATION IN A FLUID LAYER HOSTING A THIN RIGID BODY
作者： J. ANTÓNIO , A. TADEU , P. AMADO MENDES
DOI: 10.1142/S0218396X08003567
关键词:
摘要: This paper models three-dimensional wave propagation around two-dimensional rigid acoustic screens, with minimal thickness (approaching zero), and placed in a fluid layer. Rigid or free boundaries are prescribed for the flat surfaces. The problem is computed using Traction Boundary Element Method (TBEM), which appropriate modeling thin-body inclusions, overcoming difficulty posed by conventional direct (BEM). solved as summation of problems different numbers along direction geometry does not vary. source each spatially sinusoidal harmonic line load. influence horizontal medium on final field analytically 2.5D Green's functions model developed. Thus, only boundary screen needs to be discretized elements. computations performed frequency domain subsequently inverse Fourier transformed obtain time results. Complex frequencies used avoid aliasing phenomena
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