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San Gregorio Wakes

Scope

The benchmark is open to the participants of the Wakebench project using flow and wake models for complex terrains. 

Objectives

The main goal of this benchmark is to assess flow and wake models behaviour on a very complex terrain environment.

Simulations need to be performed to ensure an exhaustive characterization of the wind on the main direction sector (270°) for the wind farm sub-cluster T10, T11, T12, T13. Reliability of the models will be investigated using the anemometric and SCADA measurements.

Data Accessibility

Brief description about the accessibility of the data

Input data

The ASTER digital terrain, the roughness model (winter and summer retrieved fromwww.dataforwind.com), as well as the layout of the sub-cluster shall be provided to the participants (the coordinate system used is UTM-WGS84-33N).

The wind turbines are Siemens SWT-93 with a nominal power of 2300 kW and a hub height of 80 m; the nominal thrust and power curves shall be available.

The conditions for simulating the wind farm flow are the anemometric conditions at reference met-mast position at hub-height.

 

Mean velocity at hub height (80 m) at met-mast position:         from 5 to 9 m/s

Mean direction at hub height (80 m) at met-mast position:       from 260 to 280°

A sample data set, with synchronized met-mast and turbine data, shall be provided in the form of statistics of wind speed and wind direction at met-mast, as well as corresponding rotor position statistics of the sub-cluster of interest.

Output data

The output requested is the percentage deviation of the production of each turbine compared to the average of the sub-cluster. Such values can be optimally provided with statistical uncertainties.