Wind Energy

38 J. Fernández Puga et al.
6.4 Conclusions
The knowledge of the atmospheric flow over hills is of high importance in
wind energy purposes. In order to predict the energy production rate of wind
energy converters numerical calculations of the flow field are necessary when
no measurements are available. Due to the fact that the flow phenomena in the
atmosphere are turbulent the choice of the right turbulence model is essential.
It has been shown that the velocity field has been calculated in agreement with
the measurements in the wind tunnel of the University of Kaiserslautern using
the k − ɛ RNG and the k − ω SST turbulence model as well as a second-order
discretization scheme and a refined near-wall mesh. Best agreement is achieved
performing a large-eddy simulation.
References
1. Fernández Puga J, Fallen M, Ebert F (2003) Wind energy converter siting in
forest landscapes. In: Conference Proceedings of EWEC 2003. Madrid
2. Fernández Puga J, Fallen M, Ebert F, Tetzlaff G (2002) Long-term prediction
of wind resources by use of a mean wind year. In: Conference Proceedings of
the World Wind Energy Conference and Exhibition. Berlin
3. Fernández Puga J, Fallen M, Ebert F (2004) Evaluation of turbulence models
for wind energy production predictions. In: Conference Proceedings of EWEC
2004. London