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.

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.

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.

The Research Status of Self-Compensation Lubricating Composites at High Temperature

2013 ◽  
Vol 470 ◽  
pp. 108-111
Author(s):  
Ying Han ◽  
Yan Jun Wang ◽  
Shou Ren Wang
Keyword(s):  
High Temperature ◽  
Matrix Material ◽  
Research Progress ◽  
Lubrication Mechanism ◽  
Research Status

It is significant and necessary to carry out the development of self-compensation lubricating composites. In this paper, the current research of self-lubrication composites is summarized. The lubrication mechanism of the high temperature self-compensation lubricating composites is introduced and the research progress of matrix material and lubricant material of the composites is reviewed.

scholarly journals Enzyme degradation mechanism of white rot fungi and its research progress on Refractory Wastewater

2021 ◽  
Vol 237 ◽  
pp. 01002
Author(s):  
ShiYuan Huang ◽  
Sheng Li ◽  
ZhenYu Wang ◽  
SenHuan Lin ◽  
Jian Deng
Keyword(s):  
Phenolic Compounds ◽  
Enzymatic Degradation ◽  
Enzyme System ◽  
Degradation Mechanism ◽  
White Rot Fungi ◽  
White Rot ◽  
Research Progress ◽  
Degrading Enzyme ◽  
Research Status ◽  
Enzyme Degradation

The lignin-degrading enzyme system of white rot fungi is highly efficient and non-specific, and can degrade a variety of pollutants, including dyes, phenolic compounds and pesticides.The article presents an overview of the mechanism of enzymatic degradation of white rot fungi and its research status in several refractory wastewater were described.

scholarly journals Investigation on the Cathodic Protection Effect of Low Pressure Cold Sprayed AlZn Coating in Seawater via Numerical Simulation

Coatings ◽  
2017 ◽  
Vol 7 (7) ◽  
pp. 93 ◽  
Author(s):  
Guosheng Huang ◽  
Xiaodan Lou ◽  
Hongren Wang ◽  
Xiangbo Li ◽  
Lukuo Xing
Keyword(s):  
Numerical Simulation ◽  
Cathodic Protection ◽  
Low Pressure ◽  
Protection Effect

scholarly journals Numerical simulation of minor losses coefficient on the example of elbows

2018 ◽  
Vol 180 ◽  
pp. 02093
Author(s):  
Smyk Emil ◽  
Mrozik Dariusz ◽  
Olszewski Łukasz ◽  
Peszyński Kazimierz
Keyword(s):  
Numerical Simulation ◽  
Numerical Methods ◽  
Numerical Method ◽  
Cross Section ◽  
Analytical Methods ◽  
Circular Cross Section ◽  
Experimental Methods ◽  
Loss Coefficient ◽  
Complicated Problem ◽  
Minor Losses

Determining of minor losses coefficient is very complicated problem. Analytical methods are often very difficult and experimental methods are very expensive and time-consuming. Consequently, the use of numerical methods seems to be a good solution, but there are no publications describing this issue. Therefore, the paper is describing the numerical method of determining the minor loss coefficient ξ on the example of elbows with circular cross-section.

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