Data di Pubblicazione:
2006
Citazione:
An explicit second order spectral element method for acoustic waves / E. Zampieri, L.F. Pavarino. - In: ADVANCES IN COMPUTATIONAL MATHEMATICS. - ISSN 1019-7168. - 25:4(2006), pp. 381-401.
Abstract:
The acoustic wave equation is here discretized by conforming spectral elements in space and by the second order leap-frog method in time. For simplicity, homogeneous boundary conditions are considered. A stability analysis of the resulting method is presented, providing an upper bound for the allowed time step that is proportional to the size of the elements and inversely proportional to the square of their polynomial degree. A convergence analysis is also presented, showing that the convergence error decreases when the time step or the size of the elements decrease or when the polynomial degree increases. Several numerical results illustrating these results are presented.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
acoustic waves; spectral elements; explicit time advancing schemes; stability
Elenco autori:
E. Zampieri, L.F. Pavarino
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