Prediction of wake effects on wind farm power production using a RANS approach. Part II. Offshore: Case studies from the UPWIND project

Cabezón Martínez, Daniel; Sumner, J. y Crespo Martínez, Antonio (2011). Prediction of wake effects on wind farm power production using a RANS approach. Part II. Offshore: Case studies from the UPWIND project. En: "Wake Conference", 08/06/2011 - 09/06/2011, Gotland, Visby, Sweden. pp..

Descripción

Título: Prediction of wake effects on wind farm power production using a RANS approach. Part II. Offshore: Case studies from the UPWIND project
Autor/es:
  • Cabezón Martínez, Daniel
  • Sumner, J.
  • Crespo Martínez, Antonio
Tipo de Documento: Ponencia en Congreso o Jornada (Póster)
Título del Evento: Wake Conference
Fechas del Evento: 08/06/2011 - 09/06/2011
Lugar del Evento: Gotland, Visby, Sweden
Título del Libro: Wake Conference
Fecha: 2011
Materias:
Escuela: E.T.S.I. Industriales (UPM)
Departamento: Otro
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

The estimation of power losses due to wind turbine wakes is crucial to understanding overall wind farm economics. This is especially true for large offshore wind farms, as it represents the primary source of losses in available power, given the regular arrangement of rotors, their generally largerdiameter and the lower ambient turbulence level, all of which conspire to dramatically affect wake expansion and, consequently, the power deficit. Simulation of wake effects in offshore wind farms (in reasonable computational time) is currently feasible using CFD tools. An elliptic CFD model basedon the actuator disk method and various RANS turbulence closure schemes is tested and validated using power ratios extracted from Horns Rev and Nysted wind farms, collected as part of the EU-funded UPWIND project. The primary focus of the present work is on turbulence modeling, as turbulent mixing is the main mechanism for flow recovery inside wind farms. A higher-order approach, based on the anisotropic RSM model, is tested to better take into account the imbalance in the length scales inside and outside of the wake, not well reproduced by current two-equation closure schemes.

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ID de Registro: 21088
Identificador DC: http://oa.upm.es/21088/
Identificador OAI: oai:oa.upm.es:21088
Depositado por: Memoria Investigacion
Depositado el: 16 Mar 2014 11:30
Ultima Modificación: 21 Abr 2016 11:11
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