A computerized numerical method which calculates the potential and current distributions of cathodic protection systems is introduced. The method uses Green's third formula to solve the Laplace equation which is the governing equation for potential distributions in electrochemical cells. For homogeneous environments, this numerical method is more efficient than either the finite difference or finite element methods developed previously. This advantage is most significant in detailed three dimensional analyses. The results of an analysis on a cathodically protected tank bottom agree with experimental measurements indicating that the method is accurate.

Subject
Electrochemical cells, Finite element analysis, Modeling, Cathodic protection, Cathodic potential, Boundary conditions, Polarization curves, Current densities, Tank bottoms, Elements, Electrochemical potential, Electrolytes, Electrode potential
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1982
Association for Materials Protection and Performance (AMPP)
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