Finite Element Analysis of Combined Diffraction — Refraction
The problem of combined diffraction — refraction of surface waves propagating in a fluid of constant depth which encounter an area of varying bathymetry and obstacles has been studied by many different numerical methods. The problem is essentially three-dimensional and, as such, can be analysed by the boundary element method (Garrison (1978)), the finite element method (Zienkiewicz et al. (1978)) or the hybrid element method (Yue et al. (1978)). All these three-dimensional models, however, require huge storage and computer time mainly when the incident wave length becomes short.
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