scholarly journals Study on the effect of mesh ratio to the potential distribution of RC cathodic protection using BEM

2019 ◽  
Vol 364 ◽  
pp. 012022
Author(s):  
I Tanjung ◽  
S Fonna ◽  
S Huzni
Keyword(s):  
Cathodic Protection ◽  
Potential Distribution ◽  
Mesh Ratio

Research progress on the cathodic protection current and potential distribution of the tank bottom plate

2016 ◽  
Vol 34 (5-6) ◽  
pp. 277-293
Author(s):  
Jie Kou ◽  
Xince Zhang ◽  
Gan Cui ◽  
Xueming Yin
Keyword(s):  
Numerical Simulation ◽  
Numerical Methods ◽  
Cathodic Protection ◽  
Potential Distribution ◽  
Research Progress ◽  
Bottom Plate ◽  
Research Status ◽  
Combined Use ◽  
Condition Modeling ◽  
Tank Bottom

AbstractCathodic protection is an important method to prevent the corrosion of the tank bottom plate. In this article, the research status in recent decades of the current density and potential distribution of the tank bottom plate in cathodic protection is summarized. The research status and problems of the analytical and numerical methods for tank bottom plate are described and discussed. A detailed summary of boundary condition modeling is carried out. It is proposed that the analytical method will be gradually replaced by numerical methods and the mathematical model and boundary conditions need to be further studied and improved. In addition, the combined use of a variety of numerical methods and a numerical simulation study on the vapor phase corrosion related to tank bottom will be a trend in the development of numerical simulation in the future.

scholarly journals Simulation the effect of anode-cathode displacement and anode type on reinforced concrete cathodic protection using BEM

2018 ◽  
Vol 197 ◽  
pp. 12001 ◽  
Author(s):  
Syarizal Fonna ◽  
Syifaul Huzni ◽  
Muzaiyin Arika Putra ◽  
Rudi Kurniawan
Keyword(s):  
Reinforced Concrete ◽  
Cathodic Protection ◽  
Potential Distribution ◽  
Research Result ◽  
Electrical Potential ◽  
System Model ◽  
Reinforcing Steel ◽  
Previous Researcher ◽  
Steel Rebar ◽  
Simulation Results

The aim of the study is to simulate the effect of anode-cathode displacement and anode type on the potential distribution of reinforced concrete (RC) cathodic protection (CP) system using boundary element method (BEM). For the simulation, Laplace equation was used to model the RC domain. The boundary conditions for the anode and cathode (reinforcing steel/rebar) were represented by its polarization curve. By using BEM, the electrical potential values on the whole domain should be calculated. Therefore, the effects of those parameters were studied based on the rebar electrical potential. For the study, the CP system model and geometry were obtained from a previous researcher. The BEM simulation results show that the anode-cathode displacement affects the distribution of electrical potential on the protected reinforcing steel. It was consistent with the previous research result. The results also show, as expected, that the anode type influences the electrical potential value on the rebar. Hence, those parameters should be considered in designing and/or evaluating the RC CP system.

Study of Influence of Stray Current on Potential Distribution of Pipeline by Numerical Simulation

2010 ◽  
Vol 154-155 ◽  
pp. 265-268
Author(s):  
Xiao Dong Zhao ◽  
Jie Yang ◽  
Shao Hua Xing
Keyword(s):  
Numerical Simulation ◽  
Cathodic Protection ◽  
Potential Distribution ◽  
Simulation Technique ◽  
Polarization Degree ◽  
Stray Current ◽  
Convenient Means ◽  
Measurement Results ◽  
Simulation Results ◽  
Numerical Simulation Technique

In this paper, numerical simulation technique was used to simulate the potential distribution when the X70 steel was influenced by stray current of different strength. The simulation results suggested that without cathodic protection, X70 steel was obviously anodic polarized in the current-out zone, with the potentials of -636mV, -559mV and -500mV respectively when the stray current was 15mA, 50mA and 100mA. The anodic polarization degree increased with the increasing of stray current density. The potential of the current-out zone was about -1000mV, -870mV and -780mV respectively when cathodic protection was adopted, and X70 steel was fully protected as the stray current corrosion controlled. The accuracy of simulation was proved by comparison simulation results with practical measurement results, which showed that the numerical simulation technique was an efficient, quick and convenient means for stray current corrosion study.

Electric Field Calculation of Pipe with Cathodic Protection in Seawater by BEM

2014 ◽  
Vol 621 ◽  
pp. 230-234
Author(s):  
Jian Hong Tan ◽  
Shi Qin Wang ◽  
Sheng Tao Zhang ◽  
Bin Xiang ◽  
Guo Qing Zhang
Keyword(s):  
Electric Field ◽  
Cathodic Protection ◽  
Potential Distribution ◽  
Electric Field Distribution ◽  
Sea Water ◽  
Boundary Element Methods ◽  
Field Calculation ◽  
Pipe Surface ◽  
Corrosion State ◽  
Electric Field Calculation

To investigate the corrosion state of subsea pipeline under cathodic protection, the surface potential distribution of the pipeline has to be measured exactly, but it’s very difficult to measure directly in actually. On base of boundary element methods (BEM), a 2D model about pipe’s cathodic protection under sea water was established, and then software to calculate the electric field distribution on pipe surface in even media (seawater) was developed by way of Matlab. The developed software was verified through an experiment in lab. The result shows that numerical calculation based on BEM by Matlab is feasible for cathodic protection electric field of pipe in marine environment.

Numerical Simulation of Cathodic Protection Potential Distribution of Coastal Power Plant Condenser Based on Physical Scale Model

2014 ◽  
Vol 644-650 ◽  
pp. 3734-3738
Author(s):  
Peng Zhang ◽  
Juan Zhao ◽  
Gui Wang
Keyword(s):  
Numerical Simulation ◽  
Power Plant ◽  
Cathodic Protection ◽  
Potential Distribution ◽  
Simulation Analysis ◽  
Simulation Software ◽  
Scale Model ◽  
Physical Scale ◽  
Finite Element Numerical Simulation ◽  
Protection Potential

Finite element numerical simulation software was used for numerical simulation analysis of cathodic protection of coastal power plant condenser based on physical scale model. The effects of location, size and number of auxiliary anode on the cathodic protection potential distribution of the condenser were studied, which would predict cathodic protection result of the condenser and provide reasonable design for cathodic protection of the condenser.

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