Stability analysis of offshore wind power monopile foundation under wind load

Abstract

Based on the calculus and blade element theory, the formulas for calculating wind load on the blade of offshore wind turbine are deduced. The time history curve and wind speed time history curve, power spectrum and wind load of wind turbines are simulated by using MATLAB software with the derived formulas and wind observation data of London Array Wind Farm. Based on the above analysis results, the stability of offshore wind power monopile foundation structures under wind loads is analyzed and studied by using ABAQUS finite element software. It is concluded that the structural stability and ultimate load of offshore wind power structures under horizontal, lower bound and ultimate loads are the same. With the increase of internal friction angle, the shakedown load and ultimate load increase gradually with the increase of pile foundation length.

Three-Dimensional LiDAR Wake Measurements in an Offshore Wind Farm and Comparison with Gaussian and AL Wake Models

“…The theoretical basis of the actuator method is the blade element theory, proposed by Richard Froude in 1889 [21]. The theory decomposed the complicated three-dimensional blade flow into small blade elements and analyses the force and function exchange for the flow around each blade.…”