Convergence analysis of an adaptive edge element method for Maxwell's equations

Authors:
Junqing Chen;Yifeng Xu;Jun Zou
Affiliations:
Department of Mathematical Sciences, Tsinghua University, Beijing 100084, China;Department of Mathematics, Shanghai Jiao Tong University, Shanghai 200240, China;Department of Mathematics, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
Venue:
Applied Numerical Mathematics
Year:
2009

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Abstract

An efficient and reliable a posteriori error estimate is derived for solving three-dimensional static Maxwell's equations by using the edge elements of first family. Based on the a posteriori error estimates, an adaptive finite element method is constructed and its convergence is established. Compared with the existing results, an important advantage of the new theory lies in its feature that the usual marking of elements based on the oscillation is not needed in our adaptive algorithm, while the linear convergence of the algorithm can be still demonstrated in terms of the reduction of the energy-norm error and the oscillation. Numerical examples are provided which demonstrate the effectiveness and robustness of the adaptive methods.