@Article{CiCP-29-1125, author = {Chen , HuangxinLi , JingzhiQiu , Weifeng and Wang , Chao}, title = {A Mixed Finite Element Scheme for Quad-Curl Source and Eigenvalue Problems}, journal = {Communications in Computational Physics}, year = {2021}, volume = {29}, number = {4}, pages = {1125--1151}, abstract = {

The quad-curl problem arises in the resistive magnetohydrodynamics (MHD) and the electromagnetic interior transmission problem. In this paper we study a new mixed finite element scheme using Nédélec's edge elements to approximate both the solution and its curl for quad-curl problem on Lipschitz polyhedral domains. We impose element-wise stabilization instead of stabilization along mesh interfaces. Thus our scheme can be implemented as easy as standard Nédélec's methods for Maxwell's equations. Via a discrete energy norm stability due to element-wise stabilization, we prove optimal convergence under a low regularity condition. We also extend the mixed finite element scheme to the quad-curl eigenvalue problem and provide corresponding convergence analysis based on that of source problem. Numerical examples are provided to show the viability and accuracy of the proposed method for quad-curl source problem.

}, issn = {1991-7120}, doi = {https://doi.org/10.4208/cicp.OA-2020-0108}, url = {http://global-sci.org/intro/article_detail/cicp/18649.html} }