Method for simulating and optimizing numerical value of anti-corrosion system of naval architecture and ocean engineering

Abstract

The invention belongs to the technical field of anti-corrosion of naval architecture and ocean engineering and relates to a method for simulating and optimizing a numerical value of an anti-corrosion system of the naval architecture and ocean engineering. The method is characterized by comprising the following steps of: geometrically modeling, establishing a boundary element model, and meshing an established geometric model; loading digitalized sacrificial anode information on the basis of the boundary element model; calculating a coefficient matrix, initializing a piecewise linear relation, solving a system of linear equations, and carrying out relevant judgment to finally obtain a calculation result; visualizing the calculation result in a form of cloud charts or curves; and re-arranging a sacrificial anode to obtain an optimal cathode protection system. The invention has the advantages that: by the method, the total anti-corrosion performance of an ocean structure can be more comprehensively described, and an optimization design scheme is provided, so the service life of the ocean structure is prolonged; meanwhile, the full automation of the whole calculation process is realized by programming software, so the method has a practical engineering application value.

Description

technical field [0001] The invention belongs to the technical field of anticorrosion of ships and ocean engineering, and relates to numerical simulation and design methods of complex coupled anticorrosion systems. Background technique [0002] The research on numerical simulation calculation method of cathodic protection system began in the late 1970s. Researchers initially chose sacrificial anode cathodic protection system as the calculation object, and tried finite difference method, finite element method and boundary distance method. After more than 20 years of development, the boundary element method has shown the strongest adaptability and achieved the best development for the numerical simulation calculation of marine engineering anticorrosion systems. Corresponding research results have been published in academic papers on the numerical simulation calculation research of sacrificial anode cathodic protection system, impressed current cathodic protection system, galvan...

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Problems solved by technology

[0004] ① The numerical simulation calculation technology of sacrificial anode cathodic protection system in ships and marine engineering is becoming mature, and can be used to solve the corrosion problem caused by galvanic couple system, but for the anticorrosion system of ballast water tank in ships or floating marine structures Numerical simulation calculations still have limitations

[0005] ②Numerical simulation calculation technology of impressed current cathodic protection system for ships and ocean engineering can carry out numerical simulation calculation for anticorrosion system composed of a single impressed current cathodic protection device (DC power supply, reference electrode, auxiliary anode), but for multiple For the complex anti-corrosion system composed of impressed current cathodic protection devices, in the discussion of the calculation method, only the current balance condition is reflected, but the coupling problem between impressed current cathodic protection devices is not reflected, so it cannot be expected to achieve correct numerical simulation calculations

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