On An Hybrid Technique For Combining
The Uniform Theory Of Diffraction With
Finite Boundary Elements
Author(s)
Z. El Hachemi, P.H. Gatignol & M. Bentahar
Abstract
The resolution of diffraction problems of incident waves through an obstacle is generally
based on classical numerical methods for the calculations in low frequency ranges, and on the
asymptotic ones for the high frequency calculations. However, it is sometimes difficult to use
only one resolution method, when the diffracting object presents simultaneously small and
large dimension zones with respect to the wave length. Therefore, it is useful to couple the
two methods, numerical and asymptotic, for treating the problem correctly. This work treats
diffraction problem of a monochromatic plane wave, incident on a rigid obstacle presenting a
singularity. Initially, the pressure field is calculated in all space points using Uniform Theory
of Diffraction, which correc
Keywords
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