Print Email Facebook Twitter Predicting scale effects on floating offshore wind turbines Title Predicting scale effects on floating offshore wind turbines Author Make, M.K.P. Contributor Van Terwisga, T.J.C. (mentor) Faculty Mechanical, Maritime and Materials Engineering Department Marine & Transport Technology Programme Ship Hydromechanics Date 2014-04-09 Abstract Floating wind turbines are becoming fashionable within the Renewable Energy world. In the last years MARIN has been involved in an increasing number of projects for the offshore wind industry. The complete simulation of a full-scale free-floating wind turbine under waves and winds using viscous-flow (Unsteady-Reynolds-Averaged-Navier-Stokes URANS) CFD codes is still nowadays very costly. However, CFD methods can be used in an efficient way for aerodynamic analysis. And they can be used rather to generate 2D input for BEMT design tools or for the real complete analysis of the wind turbine. In the present work CFD URANS code ReFRESCO is used for both purposes, having in mind the design of the new MARIN Stock (not Floating) Wind Turbine (MSWT), based on the well-known 5MW NREL full-scale turbine. Only open-water constant wind, fixed platform conditions are considered here. The objectives of the work presented are threefold: 1) the NREL 5MW baseline turbine is calculated using ReFRESCO both in full-scale and model-scale (Froude-scaling) conditions and the scale-effects studied and quantified; 2) the MSWT designed for thrust/performance-scaling is analyzed using CFD and validation against available MARIN experimental data is done; 3) in order to possibly further improve the MSWT design, the aerodynamic characteristics of its sections/foils are scrutinized by means of a full numerical study using ReFRESCO. Subject floatingoffshorewindturbine To reference this document use: http://resolver.tudelft.nl/uuid:78d0c912-47fb-4efb-8953-ad33d8fc7e96 Embargo date 2014-05-09 Part of collection Student theses Document type master thesis Rights (c) 2014 Make, M.K.P. Files PDF MSc_Thesis_M_Make.pdf 26.76 MB Close viewer /islandora/object/uuid:78d0c912-47fb-4efb-8953-ad33d8fc7e96/datastream/OBJ/view