The 12th International Conference on Hydrodynamics
18 – 23 september 2016, Egmond aan Zee, The Netherlands
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Unsteady Aerodynamic Simulations of Floating Offshore Wind Turbines with Coupled Periodic Surge and Pitch motions


Go-down ichd2016 Tracking Number 79

Presentation:
Session: Computational Fluid Dynamics III
Room: Room 2
Session start: 15:30 Mon 19 Sep 2016

Ping Cheng   dcwan@sjtu.edu.cn
Affifliation: Shanghai Jiao Tong University

Yong Ai   dcwan@sjtu.edu.cn
Affifliation: Shanghai Jiao Tong University

Decheng Wan   dcwan@sjtu.edu.cn
Affifliation: Shanghai Jiao Tong University


Topics: - Computational fluid dynamics

Abstract:

Compared with bottom-fixed wind turbines, a floating offshore wind turbine (FOWT) has an extra level of complexity on aerodynamic performance because of the motions of the supporting platform. In this paper, the unsteady aerodynamic performance of the NREL-5MW Baseline wind turbine with coupled periodic surge and pitch motions of its supporting platform are investigated. The three-dimensional Reynolds Averaged Navier-Stokes equations are solved for the aerodynamic numerical simulation. The naoe-FOAM-os-SJTU solver, which is based on OpenFOAM and overset grid technique, is employed. From the simulation, the time series of the unsteady torque and thrust are obtained, together with the detailed information of the wake flow field to clarity the detailed flow filed information. The simulation results are compared both with those obtained from aerodynamic simulation of wind turbine with effects of platform’s periodic surge motion, and with other approaches with different numerical methods.