Person: Tapiador Fernández, Bárbara
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Nonreflecting boundary conditions for discrete waves
We introduce a new class of nonreflecting boundary conditions for lattice models, which minimizes reflections at artificial boundaries. Exact integrodifferential boundary conditions for finite chains and half-spaces are obtained by means of Green's functions for initial value problems. Truncating the resulting integrals in time, we obtain absorbing boundary conditions. Numerical tests illustrate the ability of these conditions to suppress reflections.
Condiciones de contorno no reflectantes
En esta tesis hemos desarrollado condiciones de contorno no reflectantes en dos casos concretos. Por un lado, en modelos de crecimiento de burbujas de helio en plutonio, donde se produce un proceso de agregación molecular. Por otro, en sistemas de elasticidad discreta relacionados con la simulación de dinámica de defectos en nanocristales.