INVESTIGADORES
NIGRO Norberto Marcelo
congresos y reuniones científicas
Título:
FLUID STRUCTURE INTERACTION FOR NEXT GENERATION HORIZONTAL AXIS WIND TURBINES (HAWT)
Autor/es:
NIGRO NORBERTO; FRANCK GERARDO; DORSCH JUAN PABLO; GIMENEZ JUAN; GENTILE CARLOS; CARDONA ALBERTO
Lugar:
Santa Fe
Reunión:
Congreso; ENIEF 2019; 2019
Institución organizadora:
AMCA - CIMEC
Resumen:
This work deals with the development of computational models and appropriate numericalmethods to give an answer with a good compromise between performance and precision for the designof next generation 15 MW horizontal axis wind turbines. The most important factor for increasing theproductivity of wind turbines is to have the necessary technology for using longer blades and highertowers. This factor is driving research and development towards the construction of more powerful,efficient, durable and profitable turbines. All these added to other innovations that make the manufac-turing of turbines easier and cheaper: e.g. wind turbines that collect and interpret data in real time toact mechanically and manage the flow, maximizing the harvest of energy and taking care of the mostrisky situations where the stoppage is imminent. Optimal design of wind turbines and wind energy farmsrequires a comprehensive understanding of the physics of multi-scale wind flows, structural mechanicsand materials performance, among other things. A first requirement is knowledge of isolated phenomenaon different scales and a number of individual components. However, wind turbines and wind energyfarms are complex systems involving close interactions of various phenomena (fluid, structural, mechan-ical, electrical) on multiple temporal and spatial scales. Although longer and slender blades are able tocollect more energy, it is well known that they experience large deflections compromising the efficiencyof the installation in addition to its structural integrity. On the other hand, these changes in their designmake the problem more complex due to the great disparity of flow conditions that exist between the tipof the blades with respect to the central zone. Regarding the technical aspects of the simulation, besidesthe varying flow conditions along the blades, we face a problem because the rotation combined with thedeformation of the blade make the geometry time varying and the mesh must be adapted accordingly.On the other hand, the movement of rotation of the blades and their deformation depend strongly on thecoupling between the fluid and the blades themselves, all these added to a requirement of fine enoughspatial and temporal discretization to capture the turbulent effects and the coupling itself. In this work inprogress, we present the advances in the fluid-structure coupling for horizontal axis wind turbines usingthe commercial codes StarCCM+ for the fluid dynamics (CFD), with sliding meshes and morphing forthe mesh dynamics, and Mecano for the mechanical behavior of the blades. Algorithms and interfaces tomanage the co-simulation are presented, using in all cases parallel architectures to exploit scalability.