Optimizing the sacrificial anode cathodic protection of the rail canal structure in seawater using the boundary element method

Kim, Yong−Sang; Kim, Jeongguk; Choi, Dooho; Lim, Jae-Yong

doi:10.1016/j.enganabound.2017.01.003

Cited by 23 publications

(7 citation statements)

References 13 publications

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“…In this paper, the three-dimensional boundary element method is employed to simulate the corrosion electrostatic field distribution of ship, and the influence of seawater conductivity on corrosion electric field is studied. The electric field distribution is only slightly influenced by conductivity of seawater; however, the electric field intensity decreases as seawater conductivity increases, which can be explained by Equations (15) and (16). The simulation results of BEM model and electric dipole model were compared, and the error of x-component, y-component and modulus were about 10%.…”

Section: Discussionmentioning

confidence: 99%

“…BEM was applied to anticorrosion research of offshore engineering structures in the early 1980s [13,14]. Nowadays, it has been widely used in the simulation of cathodic protection system optimization of various marine structural parts such as oil rigs, submarine pipelines and ships [15][16][17]. Wu et al [18] optimized the auxiliary anode position and output current of impressed current cathodic protection (ICCP) by BEM to reduce the corrosion electric field of ship effectively.…”

Section: Introductionmentioning

confidence: 99%

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Simulating Underwater Electric Field Signal of Ship Using the Boundary Element Method

Wang¹,

Xu²,

Zhang³

2018

PIER M

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Seawater conductivity is an important factor that affects the corrosion electric field of ship. A three-dimensional boundary element method (3D-BEM) combined with nonlinear polarization curve was employed to investigate the influence of seawater conductivity on the corrosion electrostatic field. Numerical simulation results show that the electric field distribution is only slightly influenced by the conductivity. However, the intensity decreases with the increases of conductivity. The simulation results of the BEM model were compared with the results of the equivalent electric dipole model, and the results obtained by the two methods had high similarity, which demonstrated that the BEM model was effective. The former is a more convenient and concise modeling method that can better reflect the distribution characteristics of ship's corrosion electric field than the electric dipole model.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Simulating Underwater Electric Field Signal of Ship Using the Boundary Element Method

Wang¹,

Xu²,

Zhang³

2018

PIER M

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“…Kim et al . 9 , 10 developed a boundary-element numerical model to optimize the cathodic protection designs based on the anode lifetime provided and cathodic potential distribution. They experimentally showcased the corrosion at unprotected samples and made a comparison with protected ones.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional modeling of in-ground cathodic protection systems with deforming anodes

Mansouri¹,

Binali²,

Khan³

et al. 2021

Sci Rep

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The design of sacrificial cathodic protection (CP) systems conventionally involves steady-state assumptions, which means design parameters are considered constant during the in-service life of CP systems. In contrast, it is evident by experimental observations (including field measurements) that cathodic protection is a transient process due to variations in electrolyte properties such as seasonal changes in electrical conductivity of soil, depletion of anodes, and formation of corrosion deposits on anode material surface, to name a few. The lack of practical time-dependent models on this critical issue is apparent in the literature; accordingly, in this study, a pseudo transient electrochemical model is adopted to highlight the transient behavior of cathodic protection systems and investigate key differences with steady-state behavior. For the sake of demonstration, the developed model is used to simulate the time-dependent performance of a sacrificial anode bed for cathodic protection of screw-pile foundations. The methodology proposed in this study can be used by corrosion engineers to improve and optimize the design of CP systems and numerically estimate the performance of sacrificial anodes and the level of protection over time.

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“…BEM was first applied to anticorrosion research of offshore engineering structures in early 1980s [13]. Nowadays, it has been widely used in the simulation of cathodic protection system optimization of various marine structural parts such as oil rigs, submarine pipelines, and ships [14][15][16][17]. PSM [18] is based on scaling physical quantities such as ship's dimension and ocean environment parameters according to a certain proportion, and surface potential and underwater electric field distribution of ship are analyzed by experimental means, which has the advantages of replicating the complex geometry of ship, the same electrochemical corrosion characteristics of material as that of ship, saving time, and reducing cost, and has been applied in the design of naval ship cathodic protection in the United States, Britain, and other countries [11,18].…”

Section: Introductionmentioning

confidence: 99%

Optimizing Compensation Current to Minimize Underwater Electric Field of Ship

Xu¹,

Wang²,

Xu³

et al. 2020

PIER M

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In order to reduce the underwater electric field generated by corrosion of ship, a boundary element method (BEM) combined with nonlinear polarization curve was employed to investigate the influence of output current of compensate anode in an electric field protection system on underwater electric field. Moreover, the BEM model was verified by physical scale modeling (PSM). The distribution characteristic of electric field and the variation trend of electric field with compensate current obtained by simulation are consistent with the experimental results. Moreover, the errors of peak-to-peak value of electric field obtained by experiment and simulation are within 20%. Compared with 0 mA compensation current, the peak-to-peak values of X component, Y component, Z component, and modulus are reduced by 52%, 70%, 72%, and 62% respectively when compensation current is 40 mA. The phenomenon of over-compensation will occur if compensation current is greater than 40 mA.

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Optimizing the sacrificial anode cathodic protection of the rail canal structure in seawater using the boundary element method

Cited by 23 publications

References 13 publications

Simulating Underwater Electric Field Signal of Ship Using the Boundary Element Method

Simulating Underwater Electric Field Signal of Ship Using the Boundary Element Method

Three-dimensional modeling of in-ground cathodic protection systems with deforming anodes

Optimizing Compensation Current to Minimize Underwater Electric Field of Ship

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