Effective Method for Determining Environmental Loads on Supporting Structures for Offshore Wind Turbines

Abstract

This paper presents a description of an effective method for determining loads due to waves and current acting on

Design of Structure of Tension Leg Platform for 6 MW Offshore Wind Turbine Based On Fem Analysis

“…Design [18] NREL In order to determine the optimal dimensions of the platform, a simplified parametric analysis was carried out, influenced by the shape parameters: the height of the pontoons H a , the volume displacement V b and the length of the tendons for the main parameters describing the dynamics of the platform. The main geometry parameters of the platforms are shown in Figure 2.…”

“…Both TLP platform variants have been subjected to detailed computational analysis using Morison's [17,18] software, Boundary Element Method, and RANSE-CFD.…”

“…Knowing the forces and moments allows to solve the system of equations describing the movement of an object (in six degrees of freedom). Calculations, like the above, were performed for 50-year storm conditions [18]. However, due to the fact that, at high amplitudes of motion, the platform lost stability at the maximum rated wind speed (U w = 11.4m/s; C T,11.4/s = 0.73).…”

“…As previously mentioned, the authors assume that the structure will be located in the Baltic Sea area at a depth of 60 m. The top flange to which the column will be mounted is located at a height of 15 m above the water surface. Structural loads derived from environmental conditions were calculated by hydromechanical simulation taking into account the most unfavourable conditions corresponding to the "50-year storm in the Baltic Sea" [18]. The most unfavourable conditions are considered to be the load system that causes maximum stress in one of the anchor anchoring strings of the platform, while in the opposite legs the stresses reaches the minimum.…”

Design and Strength Calculations of the Tripod Support Structure for Offshore Power Plant

“…However, determining the velocity field is not a simple task. The Maritime Institute in Gdansk analysed the hydrometeorological data for a particular sea area and performed statistical calculations, based on which a set of basic parameters of the waves and sea current was obtained [5].…”