Abstract
A mathematical model is constructed and computational experiments are performed to study the effect of anisotropy of the specific electrical conductivity of the soil on the distribution of electric and magnetic fields generated by cathodic electrochemical corrosion protection stations of the underground main pipeline (MP). The variation of electric and magnetic fields depending on the azimuth angle of rotation of the specific electrical conductivity tensor of the soil containing the pipeline is analysed.
Highlights
Cathodic electrochemical protection of underground main pipelines slows down the rate of corrosion of the pipe metal by shifting the electrical protective potential at the pipe/soil boundary to a predetermined interval at which the oxidative processes in metal are reduced
We study the electric and magnetic fields [2] that occur in electrochemical cathodic protection systems of main pipelines in anisotropic media by specific electrical conductivity
The software implementation of the calculation method described above is made in the C++ programming language
Summary
Cathodic electrochemical protection of underground main pipelines slows down the rate of corrosion of the pipe metal by shifting the electrical protective potential at the pipe/soil boundary to a predetermined interval at which the oxidative processes in metal are reduced. In a cathodic protection system that includes anode beds and pipe, the distribution of electrical properties of the host soil plays a significant role in the dispersion of electric and magnetic fields. Geological processes in the earth crust, such as sedimentation, shifts, and raising, lead to horizontal, inclined, or vertical stratifications, rock fractures, and, as a result, anisotropy of their physical properties [1]. We study the electric and magnetic fields [2] that occur in electrochemical cathodic protection systems of main pipelines in anisotropic media by specific electrical conductivity
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