A displaced dipole model for a two-cylinder system

In this paper, a displaced dipole model for two infinitely long dielectric cylinders in an applied uniform field is proposed. The displaced dipole moment and its displacement can be approximately obtained from the applied field values at the two poles of a cylinder. The electric potential distributions near the surface of cylinder calculated using the displaced dipole method are compared with those obtained with the finite-element method. The electric field distributions around the surfaces of cylinder calculated using the displaced dipole method are compared with those obtained with the finite-element method and the dipole-at-the-center approximation. The displaced dipole method is a good approximation, especially in the area between two cylinders when the displacement is less than 0.2 R.