Higher-order simulation of impressed current cathodic protection systems

JOURNAL OF COMPUTATIONAL PHYSICS

卷:394

Article

Pfeiffer, Robert A.¹  Young, John C.¹  Adams, Robert J.¹  Gedney, Stephen D.² 

[1] Univ Kentucky, Dept Elect & Comp Engn, Lexington, KY 40506 USA

[2] Univ Colorado, Dept Elect Engn, Denver, CO 80204 USA

关键词: Cathodic protection;    Corrosion;    Locally-Corrected Nystrom method;   

DOI  :  10.1016/j.jcp.2019.06.008

来源: Elsevier

【 摘 要 】

In this paper, a surface integral equation formulation for the prediction of corrosion related electrostatic fields of conducting structures in an electrolyte is presented. The integral equation is discretized using the Locally Corrected Nystrom method. An iterative technique based on the Newton-Raphson method is described for use with nonlinear boundary conditions, and a Schur complement method is discussed to help improve the nonlinear solution efficiency. An image plane method is applied when an appropriate planar electrolyte-insulating bounding surface is present. The methods are validated by analysis of a canonical problem with analytic solution and by comparison to literature data. Higher-order solution convergence is observed for the canonical problem results. (C) 2019 Elsevier Inc. All rights reserved.

【 授权许可】

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