Application of Nearly Perfectly Matched Layer with Second-order Acoustic Equations in Seismic Numerical Modeling
نویسندگان
چکیده
منابع مشابه
Perfectly Matched Layers for Second Order Wave Equations
Numerical simulation of propagating waves in unbounded spatial domains is a challenge common to many branches of engineering and applied mathematics. Perfectly matched layers (PML) are a novel technique for simulating the absorption of waves in open domains. The equations modeling the dynamics of phenomena of interest are usually posed as differential equations (or integral equations) which mus...
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The perfectly matched layer (PML) was first introduced by Berenger as a material absorbing boundary condition (ABC) for electromagnetic waves. In this paper, a method is developed to extend the perfectly matched layer to simulating seismic wave propagation in poroelastic media. This nonphysical material is used at the computational edge of a finite-difference algorithm as an ABC to truncate unb...
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The nearly perfectly matched layer (NPML) method has been successfully applied to electromagnetic and elastodynamic wave equations including elastic isotropic and anisotropic media types to absorb spurious arrivals reflected from introduced boundaries in a number of numerical solution methods. It has been shown to be extremely satisfactory for this purpose. In this paper, a first-order velocity...
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We consider the two-dimensional Maxwell s equations in domains external to perfectly conducting objects of complex shape. The equations are discretized using a node-centered finite-difference scheme on a Cartesian grid and the boundary condition are discretized to second order accuracy employing an embedded technique which does not suffer from a ‘‘small-cell’’ time-step restriction in the expli...
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ژورنال
عنوان ژورنال: Journal of Geology & Geosciences
سال: 2012
ISSN: 2329-6755
DOI: 10.4172/2329-6755.1000120