We consider progressive waves such that the time independent potential satisΓΏes the Helmholtz equation, for example, the travelling wave di racted from a body. In order to model the wave potential using ΓΏnite elements it is usual to discretize the domain such that there are about ten nodal points pe
Modelling of short wave diffraction problems using approximating systems of plane waves
β Scribed by O. Laghrouche; P. Bettess; R. J. Astley
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 370 KB
- Volume
- 54
- Category
- Article
- ISSN
- 0029-5981
- DOI
- 10.1002/nme.478
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π SIMILAR VOLUMES
We consider a two-dimensional wave di raction problem from a closed body such that the complex progressive wave potential satisΓΏes the Sommerfeld condition and the Helmholtz equation. We are interested in the case where the wavelength is much smaller than any other length dimensions of the problem.
## Abstract An efficient method is presented for transforming the matrix of the method of moments obtained by the expansion of the unknown surface currents with pulse basis function and the use of point match testing to a matrix with wavelet basis and testing functions. When the electromagnetic sca