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Finite Element Simulation of the ImpressedCathodic Protection System

机译：阴极保护系统的有限元模拟

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摘要

Impressed cathodic protected systems are frequently used to inhibit corrosion processesof variety devices and structures. Mechanistic model of the corrosion process is one ofthe important tools available to interpret experimental data. The goal of this work is todevelop impressed cathodic protection model that would be of general use in varietyapplications. Presented model takes to in account ionic mass transport by diffusion andelectromigration. To model ionic molar flows average solute velocity is used. Molartransport for each ion is described by Nernst-Planck equation. It is assumed that ionicactivity coefficients are unity. The ion-water diffusivities are independent of electrolyteconcentration for dilute solutions. As a result a set of partial differential equations forionic molar concentration with adequate boundary conditions is developed. Theseequations are subsequently solved by finite element method. At the end an illustrativeexample is given. Computational results are compared with the analytical solution.
机译：受保护的阴极保护系统通常用于抑制各种设备和结构的腐蚀过程。腐蚀过程的力学模型是可用来解释实验数据的重要工具之一。这项工作的目的是开发在多种应用中普遍使用的印象深刻的阴极保护模型。提出的模型考虑了通过扩散和电迁移的离子质量传输。为了模拟离子摩尔流量，使用了平均溶质速度。每个离子的摩尔传输由Nernst-Planck方程描述。假定离子活度系数为1。离子水的扩散率与稀溶液的电解质浓度无关。结果，开发了具有适当边界条件的一组偏微分方程式的阳离子摩尔浓度。这些方程随后通过有限元方法求解。最后给出一个说明性的例子。将计算结果与分析解决方案进行比较。

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  • 来源
    《Eurocorr 2004》|2004年|1|共1页
  • 会议地点 Nice(FR)
  • 作者

    Eugeniusz Kurgan; Marek So?ek;

  • 作者单位

    AGH University of Science and Technology Department of Electrical Engineering al. Mickiewicza 30 30-059 Krakow Poland e-mail: kurgan@agh.edu.pl;

    AGH University of Science and Technology Department of Electrical Engineering al. Mickiewicza 30 30-059 Krakow Poland e-mail:somar@agh.edu.pl;

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  • 关键词

    corrosion; cathodic protection; ions transport; finite element method;

    机译：腐蚀;阴极保护;离子传输有限元法;

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