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Findings on Wind Energy from S.N. Voormeeren and Colleagues Provide New Insights (Accurate and efficient modeling of complex offshore wind turbine...

July 25, 2014



Findings on Wind Energy from S.N. Voormeeren and Colleagues Provide New Insights (Accurate and efficient modeling of complex offshore wind turbine support structures using augmented superelements)

By a News Reporter-Staff News Editor at Energy Weekly News -- Current study results on Wind Energy have been published. According to news reporting originating in The Hague, Netherlands, by VerticalNews journalists, research stated, "Traditionally, wind turbine dynamics are analyzed using computationally efficient but geometrically coarse aeroelastic models. With ever larger offshore turbines being installed in deeper waters, the wind industry is gradually moving toward more complex foundation types such as jackets and tripods."

The news reporters obtained a quote from the research, "Even the simplest models of such structures have many more degrees of freedom (DoFs) than the complete wind turbine model, leading to excessive computation times. To cope with this, we can employ reduced superelement' modeling of the support structure. However, since these structures are subjected to hydrodynamic loading at a large portion of their DoFs, traditional reduction methods fail to properly describe the response to this excitation. In this paper, we therefore propose to combine superelement modeling with the concept of modal truncation augmentation, which consists in extending the reduction basis by adding residual vectors'. Furthermore, we use principal component analysis to find the predominant hydrodynamic loading on the support structure.A case study is performed on a reference wind turbine model on a jacket structure, revealing both the need for coupled dynamic analysis and the shortcomings of traditional superelement models for offshore support structures."

According to the news reporters, the research concluded: "Most importantly, this case study shows that the proposed augmented superelement approach allows to create very compact yet accurate models of the complex support structure, thereby enabling efficient integrated simulation of offshore wind turbines.C."

For more information on this research see: Accurate and efficient modeling of complex offshore wind turbine support structures using augmented superelements. Wind Energy, 2014;17(7):1035-1054. Wind Energy can be contacted at: Wiley-Blackwell, 111 River St, Hoboken 07030-5774, NJ, USA. (Wiley-Blackwell - www.wiley.com/; Wind Energy - onlinelibrary.wiley.com/journal/10.1002/(ISSN)1099-1824)

Our news correspondents report that additional information may be obtained by contacting S.N. Voormeeren, Siemens Wind Power, Offshore Center Competence, The Hague, Netherlands. Additional authors for this research include P.L.C. Valk, B.P. Nortier, D.P. Molenaar and D.J. Rixen.

Keywords for this news article include: Europe, The Hague, Oil & Gas, Netherlands, Wind Energy

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Energy Weekly News


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