Fluid Structure Interaction Modelling of A Novel 10MW Vertical-Axis Wind Turbine Rotor Based on Computational Fluid Dynamics and Finite Element Analysis

摘要

Large wind turbines are commonly required to be designed to meet international safety standard IEC 61400-1. According to IEC 61400-1, aeroelastic effects, which are caused by FSI (fluid structure interaction), should be taken into account in the design of the turbine. Therefore, FSI modelling of wind turbine rotors has become an important part in the development of large wind turbines. In this work, an one-way FSI model for VAWT (vertical-axis wind turbine) rotors at full scale is established. The aerodynamic loads are obtained using CFD (computational fluid dynamics), and the rotor structural responses are determined using FEA (finite element analysis). The coupling of CFD and FEA is based on the one-way coupling method, in which the aerodynamic loads obtained from CFD modelling are mapped to FEA modelling as load boundary conditions. The one-way FSI model was applied to the FSI modelling of NOVA 10MW wind turbine rotor, which is a novel large-scale VAWT rotor. The rotor pressure distributions, stress distributions and deformations are investigated based on the one-way FSI modelling.