✦ LIBER ✦

A discrete non-local (DNL) outgoing boundary condition for diffraction of surface waves

✍ Scribed by Bonet, R. P. ;Nigro, N. ;Storti, M. A. ;Idelsohn, S. R.

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 231 KB
Volume: 14
Category: Article
ISSN: 1069-8299
DOI: 10.1002/(sici)1099-0887(199809)14:9<849::aid-cnm193>3.0.co;2-s

No coin nor oath required. For personal study only.

✦ Synopsis

A discrete non-local (DNL) boundary condition is used to solve the water waves propagation problem over variable depth. This condition is obtained by means of full solution of the discrete Helmholtz operator in a structured network. We consider a simulation of wave propagation around a circular island located on either a paraboloidal shoal or constant depth bathymetry. Such examples con®rm the important improvement in accuracy for the DNL method over standard conditions in the near ®eld.

📜 SIMILAR VOLUMES

Discrete non-local absorbing boundary co

Discrete non-local absorbing boundary condition for exterior problems governed by Helmholtz equation

✍ Ruperto P. Bonet; Norberto Nigro; Mario A. Storti; Sergio R. Idelsohn 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 256 KB 👁 3 views

The finite element method is employed to approximate the solutions of the Helmholtz equation for water wave radiation and scattering in an unbounded domain. A discrete, non-local and non-reflecting boundary condition is specified at an artificial external boundary by the DNL method, yielding an equi