A5009582268- Wind Energy Research and Development
- Fluid Dynamics and Vibration Analysis
- Wave and Wind Energy Systems
- Wind and Air Flow Studies
- Aerospace Engineering and Energy Systems
- Marine and Offshore Engineering Studies
- Aquatic and Environmental Studies
National Renewable Energy Centre
2019-2023
Universidad Politécnica de Madrid
2021-2023
Abstract. This paper provides a summary of the work done within Phase III Offshore Code Comparison Collaboration, Continued, with Correlation and unCertainty (OC6) project, under International Energy Agency Wind Technology Collaboration Programme Task 30. phase focused on validating aerodynamic loading wind turbine rotor undergoing large motion caused by floating support structure. Numerical models Technical University Denmark 10 MW reference were validated using measurement data from 1:75...
M ulti wind t U rbine S imulation T ool (MUST) is a new CENER's in-house code, based on NREL's OpenFAST designed to allow the aero-hydro-servo-elastic modelling of novel multi-rotor turbine concepts. MUST also includes aerodynamic module, called AeroVIEW ( Aero dynamic V ortex f I lam E nt W ake) an implementation Free Vortex filament Method (FVM) combined with unsteady Lifting Line (LL). This model allows represent influence existing between all rotors, in each one them. In this article,...
Abstract. This work demonstrates the feasibility of an individual pitch control strategy based on nacelle yaw misalignment measurements to mitigate platform drift in upwind floating offshore wind turbines, which is caused by vertical moment produced rotor. acts degree freedom, being great importance systems that have low stiffness. Among them, single-point-mooring platforms are one most important ones. During recent years, several turbine concepts with been proposed, can theoretically...
Abstract. This study reports the results of second round analyses Offshore Code Comparison, Collaboration, Continued, with Correlation and unCertainty (OC6) project Phase III. While first investigated rotor aerodynamic loading, here, focus is given to wake behavior a floating wind turbine under large motion. Wind tunnel experimental data from UNsteady Aerodynamics for FLOating (UNAFLOW) are compared simulations provided by participants methods codes different levels fidelity. The effect...
Abstract. This study reports the results of second round analyses OC6 project Phase III. While first investigated rotor aerodynamic loading, here focus is given to wake behavior a floating wind turbine under large motion. Wind tunnel experimental data from UNsteady Aerodynamics for FLOating (UNAFLOW) are compared with simulations provided by participants methods and codes different levels fidelity. The effect platform motion both on near far investigated. More specifically, tip vortices in...
Abstract. This paper provides a summary of the work done within Phase III Offshore Code Comparison, Collaboration, Continued, with Correlation and unCertainty project (OC6), under International Energy Agency Wind Task 30. phase focused on validating aerodynamic loading wind turbine rotor undergoing large motion caused by floating support structure. Numerical models Danish Technical University 10-MW reference were validated using measurement data from 1:75 scale test performed during UNsteady...
Abstract. The numerical study of floating offshore wind turbines (FOWTs) requires accurate integrated simulations which consider the aerodynamic, hydrodynamic, servo and elastic responses these systems. In addition, system dynamics couplings need to be included calculate excitation over ensemble accurately. this paper, a new tool has been developed for coupling NREL's aero-servo-elastic OpenFAST with computational fluid (CFD) toolbox OpenFOAM. is used model rotor aerodynamics along flexible...
Abstract In the last years, several novel floating offshore wind energy concepts have appeared in market, whose goal is reduction of costs. Among them, bi-wind turbine turbines, which use a single platform to place two are one most promising ones. However, they face some challenges their full deployment. For example, depending on direction, rotors could be found downstream other and hence affected by its wake. To avoid this, turbines this type systems do not conventional active yaw...
Abstract An in-house computational tool, called MIST, has been developed to improve the accuracy of aerodynamic loads predictions floating wind turbines. MIST an module based on a Free Vortex filament Method (FVM) for wake combined with Lifting Line (LL) model blades. This validated, in this first instance, onshore configuration against well known experimental data. Different options critical parameters code have analyzed get deeper understanding impact certain assumptions kind models.
In this work, an analysis of the rotor wakes interaction for different array configurations onshore wind turbines, has been made using CENER’s in-house aerodynamic module, called AeroVIEW. The study focuses on how distance between rotors affects increases in power and thrust obtained by with more than one laterally aligned rotor. Two multi turbines NREL 5-MW type, operating at 8 m/s speed 9.21 rpm, have analyzed. first consists 5 second 2 turbines. These studied separation distances hubs,...
Abstract Multi wind turbine configurations are emerging in the offshore energy market. The modelling of aerodynamics these systems is challenging, due to small lateral distance between rotors and subsequent interaction wakes. Previous analysis literature showed that, this interaction, multi concepts present advantage an increment power production, if laterally aligned. However, counterpart variation blade loads throughout revolution, has yet be analysed depth. This study focuses on...
Abstract The emergence of novel concepts aimed at the reduction floating offshore wind energy cost is increasingly demanding new control approaches. This case multi-wind turbine assets (FOMWT), with two or more full turbines placed on same platform. strong dynamic interaction among sub-components such systems requires appropriate coordination commands driven by individual controllers. impact coupling may increase depending asset confguration, as single-point distribution mooring lines,...
Abstract The design of a floating offshore wind turbine (FOWT) requires the computation loads with time domain simulations that depend heavily on metocean conditions site. Guidelines, such as IEC 61400-3, recommend use scatter tables combined probability significant wave height (Hs) and peak period (Tp) function mean speed. Nevertheless, at early engineering phases it may be difficult to obtain adequate environmental wind-wave data where both parameters are correlated for site interest. main...
Abstract In order to reduce the cost of floating wind energy, several multi turbine platform designs have been proposed and are currently under development. Multi configurations in onshore sites found produce a combined blockage effect on incoming flow that leads greater extraction power compared isolated rotors. The main objective this study is assess obtained by configuration with respect single turbine, both wave loading. study, NREL 5MW OC4 semi-submersible has taken as reference. With...
Abstract. The numerical study of floating offshore wind turbines requires accurate integrated simulations, considering aerodynamics, hydrodynamics, servo and elastic response these systems. In addition, the system dynamics couplings need to be included calculate precisely excitation over ensemble. this paper, a new tool has been developed coupling NREL´s aero-servo-elastic OpenFAST with Computational Fluid Dynamics (CFD) toolbox OpenFOAM. is used model rotor aerodynamics alongside flexible...
Abstract. This work demonstrates the feasibility of an individual pitch control strategy based on nacelle yaw misalignment measurements to mitigate platform drift in upwind floating offshore wind turbines, which is caused by vertical moment produced rotor. acts degree freedom, being great importance systems that have low stiffness. Among them, single-point-mooring platforms are one most important ones. During last years, several turbine concepts with been proposed, can theoretically dispense...