High order finite difference methods for wave propagation in discontinuous media
2006; Elsevier BV; Volume: 220; Issue: 1 Linguagem: Inglês
10.1016/j.jcp.2006.05.007
ISSN1090-2716
Autores Tópico(s)Numerical methods in engineering
ResumoHigh order finite difference approximations are derived for the second order wave equation with discontinuous coefficients, on rectangular geometries. The discontinuity is treated by splitting the domain at the discontinuities in a multi block fashion. Each sub-domain is discretized with compact second derivative summation by parts operators and the blocks are patched together to a global domain using the projection method. This guarantees a conservative, strictly stable and high order accurate scheme. The analysis is verified by numerical simulations in one and two spatial dimensions.
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