Simulation method for steel pipe corrosion morphology evolution based on random field method

The invention relates to a simulation method for steel pipe corrosion morphology evolution based on a random field method. The simulation method comprises the steps that the size and material attribute parameters of a steel pipe component are determined; establishing a corrosion depth prediction model based on the Faraday's law of electrolysis; establishing a random field model of undetermined parameters of the corrosion depth prediction model; establishing a corrosion current density random field of a two-dimensional plane; establishing a three-dimensional space random field of the corrosion current density on the surface of the steel pipe according to the improved correlation coefficient function; establishing a corrosion depth random field according to the corrosion depth prediction model; establishing a time-varying three-dimensional space random field according to a random field theory and the corrosion depth prediction model; the dissolution time of the anti-corrosion coating is regarded as a function o