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Benchmark Electromagnetic Simulation of a Coil Using Infinite Elements

Application ID: 1412

Many environments where electromagnetic phenomena are modeled are unbounded or open, meaning that the fields should extend towards infinity. The easiest approach to model such is to use infinite elements.

COMSOL Multiphysics' implementation of these maps the model coordinates from the local, finite-sized domain to a stretched domain. The inner boundary of this stretched domain coincides with the local domain, while coordinates at the exterior boundary are scaled toward infinity.

This example shows how to model a coil in free space with infinite elements. It compares the result with the analytical solution of the problem, and also compares the results with and without infinite elements.