| 摘要: |
| 海洋钢结构阴极保护电场的数值模拟仿真和计算是当前海洋腐 蚀、阴极保护研究和工程实践中一个重要的研究方向。研究海底管线的腐蚀状态就必须准确测定管线表面的电位分布,而实际测量中深海管线表面电位分布难以直接 测量。构建了海水中钢管线的阴极保护数学模型,采用以边界元法为基础的数值计算方法,利用Matlab开发了均匀电解质中电位分布的计算软件,实测中通过 对腐蚀电场海水区域环境电场的测量,就可实现不接触测量管线表面电位的目的。最后通过海洋实测验证了计算结果的可靠性,证明了基于Matlab的数值仿真 计算引入阴极保护设计中是行之有效的。 |
| 关键词: 海底管线 Matlab 边界元 数值计算 |
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| 基金项目:国家863计划项目(2004AA602210) |
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| An application of Matlab to calculating the cathodic protection potential of ocean pipelines |
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| Abstract: |
| Numerical simulation and calculation of ocean pipeline’s cathodic protection field is an important research direction of marine corrosion, cathodic protection and engineering practice. Researching the submarine pipeline corrosion on the pipeline must be based on accurate measurements of the potential distribution of the surface.In actual measurement, it is difficult to directly measure the surface potential of deep-sea pipelines. This paper establishes a mathematical model of ocean pipeline’s cathodic protection field. Matlab is used to calculate the electric potential distribution of the corrosion based on the boundary element method. By measuring the environmental field, the pipeline surface potential measurement can be realiged without contacting the pipelines. Finally,the experimental results verify the reliability of this method, and Matlab simulation of cathodic protection design is a proven and effective method. |
| Key words: offshore pipeline Matlab boundary element numerical calculation |
