An Explicit Weighted Essentially Non-Oscillatory Time-Domain Algorithm for 3-D EMC Applications with Arbitrary Media Interfaces

摘要

A fully explicit family of 3-D weighted essentially non-oscillatory schemes in the time domain, is developed in this paper for the accurate analysis of arbitrarily-shaped different media interfaces in electrically-large EMC problems. The new method uses supplementary points compliant with a convex combination of all optimal candidate stencils and assigns proper contribution weights for consistent field calculations near the specific regions. In this manner and through an advanced temporal integration procedure, physical jump conditions are locally enforced without any artificial instabilities or spurious modes, while all inherent grid deficiencies, unlike in typical approaches, are successfully handled. Numerical validation confirms the previous merits via realistic EMC structures with demanding interfaces of general shape, curvature and fairly divergent constitutive parameters.