Boundary element analysis of galvanic corrosion problems - Computational accuracy on the galvanic field with screen plate.

Abstract

In order to examine the computational accuracy of the boundary element method for predicting galvanic corrosion and cathodic protection in the actual complicated field, the galvanic field with a screen plate was analyzed by using single and multiple region methods. It was found from the analysis of two-dimensional problems that the difference between the computational results by the two methods increased with increasing screen height. However, the results by the two methods agreed well with each other by reducing the mesh size. Three-dimensional analyses were also performed on a cylindrical vessel of cast iron and type 304 stainless steel with a screen plate. A good agreement was obtained between the computational and experimental results.