Application of BEM to Design of the Impressed Current Cathodic Protection System for Ship Hull

概要

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With the aid of the boundary element method, this paper presents an efficient design and evaluation tool of the impressed-current cathodic protection (ICCP) system for a ship hull. Desirable working state of ICCP system is obtained by the control of anode current, monitoring the potential of reference electrode. Converting impressed-current anodes to concentrated internal point sources, the Poisson's equation becomes available to express electric behavior in cell. In the present approach, not only potential and current densities on boundary but also the electric current from anode points and the set potential of the reference electrode can be calculated. The proposed methodology is applied to a practical container ship protected by an ICCP system. Based on the results of analysis, rational design of ICCP system for ship hull becomes possible.
社団法人日本船舶海洋工学会の論文