Analysis and validation of CFD wind farm models in complex terrain. Effects induced by topography and wind turbines

Cabezón Martínez, Daniel and Hansen, Kurt S. and Barthelmie, Rebecca J. (2010). Analysis and validation of CFD wind farm models in complex terrain. Effects induced by topography and wind turbines. In: "European Wind Energy Conference & Exhibition (EWEC 2010)", 20/04/2010 - 23/04/2010, Warsaw, Poland. pp..

Description

Title: Analysis and validation of CFD wind farm models in complex terrain. Effects induced by topography and wind turbines
Author/s:
  • Cabezón Martínez, Daniel
  • Hansen, Kurt S.
  • Barthelmie, Rebecca J.
Item Type: Presentation at Congress or Conference (Article)
Event Title: European Wind Energy Conference & Exhibition (EWEC 2010)
Event Dates: 20/04/2010 - 23/04/2010
Event Location: Warsaw, Poland
Title of Book: European Wind Energy Conference & Exhibition (EWEC 2010)
Date: 2010
Subjects:
Freetext Keywords: CFD modelling, wind turbine wakes, actuator disk, complex terrain
Faculty: E.T.S.I. Industriales (UPM)
Department: Otro
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Wind farms have been extensively simulated through engineering models for the estimation of wind speed and power deficits inside wind farms. These models were designed initially for a few wind turbines located in flat terrain. Other models based on the parabolic approximation of Navier Stokes equations were developed, making more realistic and feasible the operational resolution of big wind farms in flat terrain and offshore sites. These models have demonstrated to be accurate enough when solving wake effects for this type of environments. Nevertheless, few analyses exist on how complex terrain can affect the behaviour of wind farm wake flow. Recent numerical studies have demonstrated that topographical wakes induce a significant effect on wind turbines wakes, compared to that on flat terrain. This circumstance has recommended the development of elliptic CFD models which allow global simulation of wind turbine wakes in complex terrain. An accurate simplification for the analysis of wind turbine wakes is the actuator disk technique. Coupling this technique with CFD wind models enables the estimation of wind farm wakes preserving the extraction of axial momentum present inside wind farms. This paper describes the analysis and validation of the elliptical wake model CFDWake 1.0 against experimental data from an operating wind farm located in complex terrain. The analysis also reports whether it is possible or not to superimpose linearly the effect of terrain and wind turbine wakes. It also represents one of the first attempts to observe the performance of engineering models compares in large complex terrain wind farms.

More information

Item ID: 21053
DC Identifier: http://oa.upm.es/21053/
OAI Identifier: oai:oa.upm.es:21053
Deposited by: Memoria Investigacion
Deposited on: 15 Mar 2014 09:05
Last Modified: 21 Apr 2016 11:10
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