Modeling of Monopile for Onshore Wind Turbines Tower by COMSOL Multiphysics

This paper presents a study of a wind tower foundation subjected to wind loading, accomplish by using COMSOL Multiphysics. The restriction of the program is discussed with the way, in which the soil and monopile are modeled. The aim of this paper is to examine multiple monopile structure comparisons, and the problem of geotechnical engineering loads via numerical models. The computer codes are briefly described, and the numerical model is made between the results obtained from the FEM methods. Numerical methods in geotechnical engineering loads applied to the model comprise various wind turbines tower, with two different soil types. Foundation displacement, stress distribution, and total displacement at critical sections underestimate design load/stress were compared. Generally, this research looks at the virtual loads on surface of monopile on top part of monopile and the body load of foundation by applied Mohr–Coulomb in numerical model as well as similar results are found using the program for these cases, except for the wind loads predicted. Additionally, the impact of the mechanical characteristics of the adjacent soft clay and loose sand soil on the load pattern was as well investigated, together with the angle of internal friction and the cohesion of soft clay and loose sand. The outcomes of this paper may possibly be used as standards and recommendations for accomplishing a satisfactory design of monopile for onshore wind turbines tower.