Wind Farms (JNS)

In the near future, large wind farms are going to be established with several hundred megawattsize wind turbines clustered in arrays. This will have a significant impact on the wind environment and will affect the available wind resources for other wind farms. The large length scales of the park (-100 km) coupled with the fine resolution needed to resolve turbines using simple actuator line/ disc models would be demanding even for the largest available computers. Firstly, results from Task 2 will be used to develop simpler models in the form of parks modeled as roughness elements or parks modelled as body forces along with additional equations to account for thermal stratification effects. Secondly, techniques to accelerate the speed and the accuracy of the computations will be investigated, e.g. by using vorticity refinement techniques.

Expected results: Cost effective models for park to park effects, including optimized numerical methods and influence of stratification.

Milestones; Task 3 (JNS)