A fraction of the impressed current goes from the sacrificial anodes (rods) through seawater, into the ship hull, out of the ship hull, through seawater and then into the oil rig structure. The oil rig structure close to the ship is cathodically polarized.

Here, the stem works as an anode while the stern works as a cathode. The figure here shows a ship where parts are of the hull are bare steel, where the hull may work as a bipolar electrode. The ship hull is subjected to the electric field from the cathodic corrosion system. You typically use this interface in order to reduce the meshing and solver time for large geometries, where a significant part of the geometry can be approximated as tubes along edges.ДЄ ship is anchored close to an oil platform.

The interface uses a boundary element method (BEM) formulation to solve for the charge transfer equation in an electrolyte of constant conductivity, where the electrodes are specified on boundaries or as tubes with a given radius around the edges. The Current Distribution, Boundary Elements interface can be used for solving primary and secondary current distribution problems on geometries based on edge (beam or wire) and surface elements. Current Distribution, Boundary Elements Interface See all of the Electrodeposition Module updates in more detail below. For users of the Electrodeposition Module, COMSOLВ Multiphysics В® version 5.3 brings a new Current Distribution, Boundary Elements interface, a new Electrophoretic Flow interface, and new features in the Tertiary Current Distribution, Nernst-Planck interface.

Comsol 5.3 downlkoad