The impedance boundary condition applied to the finite element method using the magnetic vector potential as state variable: a rigorous solution for high frequency axisymmetric problems

The use of the impedance boundary condition in a finite element formulation is presented for high-frequency axisymmetric problems. The method has the following advantages: (a) a gain in discretization time; (b) a smaller system to be solved and thus a gain in computer memory; and (c) a gain in total computation time.<
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