Two-scale finite element Green’s function approximations with applications to electrostatic potential computation

A finite element recovery approach to Gr

A finite element recovery approach to Green’s function approximations with applications to electrostatic potential computation

✍ Ying Yang; Aihui Zhou 📂 Article 📅 2009 🏛 Elsevier Science 🌐 English ⚖ 665 KB

In this paper, a finite element recovery approach is proposed to improve the accuracy of finite element approximations for Green's functions in three dimensions. This recovery approach is based on some simple postprocessing. It is proved by both theory and numerics that the recovery approach is very