Efficient boundary element analysis superposing known solution for electrostatic problems

An efficient boundary element method for electrostatic problems is proposed. When a relatively small conductor or dielectric is added to the computation model where the solution is known, we can reduce the number of unknowns by superposing the known solution and the field induced by the unknown distributions on the boundary surfaces. In the proposed method, unknowns are the flux distributions and/or potential distributions induced by only the added small conductor or dielectric body on the boundary surfaces. Therefore, the area to be analyzed becomes small and the number of unknowns is reduced because the influence of the added body is small