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Reliability of wind farm design tools in complex terrain: A comparative study of commercial software
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.
2012 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

A comparative study of two different approaches in wind energy simulations has been made where the aim was to investigate the performance of two commercially available tools. The study includes the linear model by WAsP and the computational fluid dynamic model of WindSim (also featuring an additional forest module). The case studied is a small wind farm located in the inland of Sweden featuring a fairly complex and forested terrain. The results showed similar estimations from both tools and in some cases an advantage for WindSim. The site terrain is however deemed not complex enough to manifest the potential benefits of using the CFD model. It can be concluded that estimating the energy output in this kind of terrain is done satisfyingly with both tools. WindSim does however show a significant improvement in consistency when estimating the energy output from different measurement heights when using the forest module compared to only using the standardized roughness length.

Place, publisher, year, edition, pages
Keyword [en]
WindPRO, WAsP, WindSim, Wind Energy, Wake, Complex Terrain, Forest, CFD, Linear Model.
National Category
Energy Engineering
URN: urn:nbn:se:kth:diva-103119OAI: diva2:558704
Subject / course
Energy Technology
Educational program
Master of Science in Engineering - Mechanical Engineering
2012-06-12, D42, Lindstedtsvägen 5, Stockholm, 13:00 (Swedish)
Available from: 2012-10-11 Created: 2012-10-04 Last updated: 2012-10-11Bibliographically approved

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