William. W. Symes
The Rice Inversion Project
Department of Computational and Applied Mathematics
Rice University
Houston TX 77251-1892 USA
email symes@caam.rice.edu.
IWAVE is a framework for time-domain regular grid finite difference
and finite element methods. The IWAVE package includes
source code for infrastructure component, and
implementations of several wave physics modeling categories. This
paper presents two sets of examples using IWAVE acoustic staggered grid
modeling. The first set illustrates the effectiveness of a simple
version of Perfectly Matched Layer absorbing
boundary conditions. The second set reproduce illustrations from a recent paper on error propagation for
heterogeneous medium simulation using finite differences, and
demostrate the interface error effect
which renders all FD methods effectively first-order accurate.
The source code for these examples is packaged with the paper
source, and supports the user in duplicating the results presented
here and using IWAVE in other settings.
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