Transformer electric field calculation using BEM and FEM

New EEM/BEM Hybrid Method for Electric Field Calculation in Cable Joints

A power cable is widely used for power supply in power distributing networks and power transmission lines. Due to limitations in the production, delivery and setting up power cables, they are produced and delivered in several separate lengths. Cable itself, consists of two cable terminations and arbitrary number of cable joints, depending on the cable route length. Electrical stress control is ...

Comparing FEM-BEM and FEM-DBCI for open-boundary electrostatic field problems

This paper compares the hybrid FEM-BEM and FEM-DBCI methods for the solution of openboundary electrostatic field problems. Both methods couple a differential equation for the interior problem with an integral equation for the exterior one. The comparison shows that FEM-BEM is more accurate than FEM-DBCI but requires more computing time. PACS. 41.20.Cv Electrostatics; Poisson and Laplace equatio...

Linear FEM-based Light Field Calculation

An approach to radiance calculation of scenes of surfaces which are reflecting light, incident from extended anisotropic light sources, directional-diffusely or specularly is presented. The resulting light field is represented as a piecewise linear function over an adaptive, hierarchical cell decomposition of the linespace. Versions with exact and approximated visibility are worked out. The lin...

Convection-adapted BEM-based FEM

We present a new discretization method for homogeneous convectiondiffusion-reaction boundary value problems in 3D that is a non-standard finite element method with PDE-harmonic shape functions on polyhedral elements. The element stiffness matrices are constructed by means of local boundary element techniques. Our method, which we refer to as a BEM-based FEM, can therefore be considered a local ...

FEM-BEM Couplings without Stabilization