Regularity results for the time-harmonic Maxwell equations with impedance boundary condition

2018/04/20 by Peipei Lu, Yun Wang, Lu, Peipei +3
Mathematics · Engineering · #Numerical methods in inverse problems #Electromagnetic Simulation and Numerical Methods #Advanced Numerical Methods in Computational Mathematics

paper · pdf · doi:10.48550/arxiv.1804.07856

Abstract

This paper considers the time-harmonic Maxwell equations with impedance boundary condition.We present H²-norm bound and other high-order norm bounds for strong solutions. The H²-estimate have been derived in [M. Dauge, M. Costabel and S. Nicaise, Tech. Rep. 10-09, IRMAR (2010)] for the case with homogeneous boundary condition. Unfortunately, their method can not be applied to the inhomogeneous case. The main novelty of this paper is that we follow the spirit of the H¹-estimate in [R. Hiptmair, A. Moiola and I. Perugia, Math. Models Methods Appl. Sci., 21(2011), pp. 2263-2287] and modify the proof by applying two inequalities of Friedrichs' type to make the H¹-estimate move into H²-estimate and W^{m, p}-estimate.Finally, the dependence of the regularity estimates on the wave number is obtained, which will play an important role in the convergence analysis of the numerical solutions for the time-harmonic Maxwell equations.

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