Comparison on face based and nodal based expansions for solving 3D EM scattering fields

Abstract

In this article, the face elements are contrasted with nodal elements on the basis of unified linear interpolation basis functions. It is demonstrated that the space spanned by nodal basis is more significant than that spanned by face basis. The trade-off among the entirety of the basis, the number of the unknowns, and the CPU time based on method of moments is also investigated. Face basis results in less complicated computation, more compact computer storage, and less connected elements than nodal basis. However, nodal basis furnishes more complete function space, thus, better convergence and precision for supplied grid framework. Their effectivity relies on individual purposes.