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DG-JMCFIE Formulation for the Simulation of Composite Objects

This work investigates the application of the JMC-FIE formulation to the discontinuous Galerkin surface integral equation method for the electromagnetic analysis of arbitrarily shaped piecewise homogeneous objects. In the proposed scheme, nonoverlapping boundary surfaces and interfaces between materials can be handled independently, without any continuity requirement through multi-material junctions and tear lines between surfaces in contact. The proposed formulation can readily address nonconformal multi-material junctions, where three or more material regions meet. This completely avoids the cumbersome junction problem, which no longer requires any special treatment. Numerical experiments will be shown to validate the accuracy and demonstrate the great versatility of the proposed JMCFIE-DG formulation for the management and solution of complex composite objects with junctions.