Optimization Model And Numerical Calculation Of The Cathodic Protection System For Marine Structure

Marine environment causes serious corrosion on steel structures. Cathodic protection is an effective way to prevent or reduce corrosion on marine structures.It is very important to grasp the law of potential distribution on cathodic surface, while this can directly effect the result of cathodic protection.Setting up the mathematical model of the potential field and applying the numerical method,the law of potential distribution on cathodic surface can be grasped exactly,and then more effective design of cathodic protection system can be achieved.The optimization model of cathodic protection system and its numerical calculation becomes a hot-point in the study of cathodic protection.In this thesis, optimization design of cathodic protection system for marine structure has been studied.The main work accomplished can be summed up as the following three aspects.To begin with,the mathematical model of the potential field in 3D cathodic protection system and the procedures on solving the mathematical model by finite element method have been studied,and the corresponding computer calculation programs have been worked out.Secondly, a new style of partial differential equation inverse problem has been proposed for the optimization design of anode in cathodic protection.The corresponding solving method is presented.The computer calculation programs,which are used to solve the inverse problem,have been work out by using circle algorithms and genetic algorithms respectively.By comparing the advantages and disadvantages of the two algorithms,it can be got that the combination use of the two algorithms...