@Article{IJNAM-21-822, author = {Chen , ZhimingLi , KeLyu , Maohui and Xiang , Xueshaung}, title = {A High Order Unfitted Finite Element Method for Time-Harmonic Maxwell Interface Problems}, journal = {International Journal of Numerical Analysis and Modeling}, year = {2024}, volume = {21}, number = {6}, pages = {822--849}, abstract = {

We propose a high order unfitted finite element method for solving time-harmonic Maxwell interface problems. The unfitted finite element method is based on a mixed formulation in the discontinuous Galerkin framework on a Cartesian mesh with possible hanging nodes. The $H^2$ regularity of the solution to Maxwell interface problems with $C^2$ interfaces in each subdomain is proved. Practical interface-resolving mesh conditions are introduced under which the $hp$ inverse estimates on three-dimensional curved domains are proved. Stability and $hp$ a priori error estimate of the unfitted finite element method are proved. Numerical results are included to illustrate the performance of the method.

}, issn = {2617-8710}, doi = {https://doi.org/10.4208/ijnam2024-1033}, url = {http://global-sci.org/intro/article_detail/ijnam/23462.html} }