Perfectly matched multiscale simulations
نویسنده
چکیده
A multiscale method is proposed. It combines the so-called bridging scale method and the perfectly matched layer method to form a robust and versatile multiscale algorithm. The method can efficiently eliminate the spurious reflections/diffractions from the artificial atomistic/continuum interface by matching the impedance at the interface of the molecular dynamic region and the perfectly matched layer. Moreover, it is shown in this paper that the method can capture anharmonic interaction among nonuniformly distributed atoms in a local region.
منابع مشابه
Perfectly matched multiscale simulations for discrete lattice systems: Extension to multiple dimensions
Extending the technique of the perfectly matched layer PML to discrete lattice systems, a multiscale method was proposed by To and Li Phys. Rev. B 72, 035414 2005 , which was termed the perfectly matched multiscale simulation PMMS . In this paper, we shall revise the proposed PMMS formulation, and extend it to multiple dimensions. It is shown in numerical simulations that the perfectly matched ...
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