A provably stable SBP-SAT FDTD subgridding method is proposed that enables direct coupling of an embedded refined region to a single surrounding coarse-grid domain without region splitting or auxiliary blocks.
A New Hybrid Implicit–Explicit FDTD Method for Local Subgridding in Multiscale 2-D TE Scattering Problems,
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A Stable SBP-SAT FDTD Subgridding Method Without Region Split
A provably stable SBP-SAT FDTD subgridding method is proposed that enables direct coupling of an embedded refined region to a single surrounding coarse-grid domain without region splitting or auxiliary blocks.