Ricerc@Sapienza

In recent years, wind energy has become one of the most important and promising sources of renewable energy, which demands additional transmission capacity and better means of maintaining system reliability. As wind power continues its rapid growth worldwide, offshore wind farms are likely to comprise a significant portion of the total production of wind energy and may even become a sizable contributor to the total electricity production in some countries.
This work studies multi-physic numerical modeling of floating offshore wind turbines (FOWT) with spar-buoy support platform using finite element method (FEM), computational fluid dynamics (CFD), blade element momentum (BEM) and other theories and methods to analyze the multi-physic model of the complete system of FOWT in 2D. During the project, efforts will be made to better understand the system properties of floating offshore wind turbines and to improve both numerical and physical modeling techniques. The goal of this study is comparing between different type of supporting platform for deep-water (¿200 meters) and optimum model of a spar-buoy supported platform for a FOWT. Ansys commercial code will use for modeling multi-physic behavior of offshore wind turbine (OWT). All the wind turbine response simulations in this study will run using the program, FAST (Fatigue, Aerodynamics, Structures, and Turbulence), developed at the National Renewable Energy Laboratory. The NREL 5 MW baseline wind turbine model, developed to represent a typical utility-scale multi-megawatt wind turbine for offshore applications, is considered in the present study. The turbine model is a conventional three-bladed variable-speed, collective pitch-controlled upwind machine. It was developed to support concept studies.