On the Current Input in 3-D Finite Element Analysis using Tetrahedron Edge Finite Element

This paper considers with one of the main problems in the recently developed edge finite element method: inputting the source current. Source current must be input in such a manner to satisfy the solenoidal condition for each finite element, a condition essential in developing a numerically stable system of algebraical equations. Satisfaction of the solenoidal source current condition is especially difficult in cases where the shape of the soils is either complicated of symmetrical along axis, which necessitates the use of tetrahedral edge elements. Using electric vector potential as an auxiliary function instead of using current density vectors directly, in this paper the authors propose a simple and efficient algorithm vectors directly, in this paper the authors propose a simple model. Obtained results together with conclusions are also presented.