solidot新版网站常见问题,请点击这里查看。
消息
本文已被查看1984次
An example of explicit implementation strategy and preconditioning for the high order edge finite elements applied to the time-harmonic Maxwell's equations. (arXiv:1711.05629v1 [math.NA])
来源于:arXiv
In this paper we focus on high order finite element approximations of the
electric field combined with suitable preconditioners, to solve the
time-harmonic Maxwell's equations in waveguide configurations.The
implementation of high order curl-conforming finite elements is quite delicate,
especially in the three-dimensional case. Here, we explicitly describe an
implementation strategy, which has been embedded in the open source finite
element software FreeFem++ (this http URL). In particular, we
use the inverse of a generalized Vandermonde matrix to build basis functions in
duality with the degrees of freedom, resulting in an easy-to-use but powerful
interpolation operator. We carefully address the problem of applying the same
Vandermonde matrix to possibly differently oriented tetrahedra of the mesh over
the computational domain. We investigate the preconditioning for Maxwell's
equations in the time-harmonic regime, which is an underdeveloped issue in the
literature, particularly for hi 查看全文>>