Extreme waves represented by abnormal waves have a potential threat to the safety of offshore wind turbine foundation. This article will focus on the high platform pile foundation of a 3 MW offshore wind turbine in the Donghai Bridge offshore wind power demonstration project

and firstly FLUENT software is used to establish the interaction model between regular waves and the pile foundation of offshore wind turbines with high bearing platforms

and the numerical simulation results are compared and verified with existing experimental results to verify the reliability of the numerical simulation results. Then

abnormal waves are used as incident wave conditions to simulate their impact on the pile foundation of high bearing platforms and compared with the impact results of regular waves to compare the differences and similarities between the two incident wave conditions. Results show that the wave loads obtained by the numerical simulation method are much closer to the laboratory results than those from the MORISON method. For the same experimental cases

the errors of numerical simulations are up to 39% smaller than those of the relevant technical specifications

and this indicates that the numerical simulation method is more applicable. For the same scale conditions

the wave peak loads generated by abnormal waves can reach 2.2 times the regular wave forces

so the coastal engineering structures without fully considering the extreme wave load will be more dangerous.