Showing 2 results for Multi-Body Dynamics
Mehdi Baghee, Hossein Shahverdi, Seyyed Mahmoud Haseminejad,
Volume 10, Issue 19 (9-2014)
Abstract
In this paper a multi-body system of barge type wind turbine under stochastic wave and wind has been modeled within MSC ADAMS. For wind loading, the stochastic turbulent wind data have been extracted using TurbSim software.Also, the AeroDyn module has been used for calculating lift and drag forces on the blades of turbine.. The hydrodynamic loads have been calculated using HydroDyn module within time domain. It composed of hydrostatic restoring nonlinear viscous drag from incident wave kinematics the added mass and damping contributions from linear wave radiation, including free surface memory effects and the incident wave excitation. By linking these modules with ADAMS/Solver milieu, the time domain, aero-hydro-elastic simulation of Barge type wind turbines has been achieved. The derived results have been compared with FAST’s outputs. The comparison shows the prosperity and accuracy of implemented analysis. The generality of analysis ensures that the simulation tool is applicable for any other types of the wind turbine, floating support platform, and mooring system configurations.
Mohammad Ali Nosratzadeh, Mir Mohammad Ettefagh, Pooya Hajinezhad Dehkharghani,
Volume 14, Issue 28 (1-2019)
Abstract
As the cost of maintaining and repairing floating wind turbines is high compared with conventional turbines, one way to reduce these costs is to investigate the defects in these structures before any practical work. The importance of the stability and structural safety of wind turbines becomes more important with water depth growth and one of the most important factors for the stability of floating wind turbines is the system of mooring cables. In this paper, the effects of broken mooring cables on the dynamic response of a TLP type wind turbine is investigated. For this purpose, the floating wind turbine is modeled accurately with non-linear equations so that this modeling is responsive to large rotation angles that may be caused due to the cutting-off of the mooring cables. After concluding turbine modeling and applying forces, by cutting various mooring cables, the dynamic response changes of the structure are investigated. Studying the results shows that unlike other platforms, breaking of the mooring lines in a TLP-type turbine does not cause extreme oscillations and drifts in the structure.
