Wind and Structures

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Towards a digital twin realization of the blade system design study wind turbine blade

  • Baldassarre, Alessandro (Department of Mechanical and Aeronautical Engineering MAE, Clarkson University) ;
  • Ceruti, Alessandro (Department of Industrial Engineering DIN, University of Bologna) ;
  • Valyou, Daniel N. (School of Engineering, Clarkson University) ;
  • Marzocca, Pier (School of Engineering, Aerospace Engineering and Aviation, RMIT University)
  • Received : 2017.05.19
  • Accepted : 2018.12.17
  • Published : 2019.05.25
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Abstract

This paper describes the application of a novel virtual prototyping methodology to wind turbine blade design. Numeric modelling data and experimental data about turbine blade geometry and structural/dynamical behaviour are combined to obtain an affordable digital twin model useful in reducing the undesirable uncertainties during the entire turbine lifecycle. Moreover, this model can be used to track and predict blade structural changes, due for example to structural damage, and to assess its remaining life. A new interactive and recursive process is proposed. It includes CAD geometry generation and finite element analyses, combined with experimental data gathered from the structural testing of a new generation wind turbine blade. The goal of the research is to show how the unique features of a complex wind turbine blade are considered in the virtual model updating process, fully exploiting the computational capabilities available to the designer in modern engineering. A composite Sandia National Laboratories Blade System Design Study (BSDS) turbine blade is used to exemplify the proposed process. Static, modal and fatigue experimental testing are conducted at Clarkson University Blade Test Facility. A digital model was created and updated to conform to all the information available from experimental testing. When an updated virtual digital model is available the performance of the blade during operation can be assessed with higher confidence.

Keywords

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