Preprints
https://doi.org/10.5194/wes-2021-24
https://doi.org/10.5194/wes-2021-24

  29 Apr 2021

29 Apr 2021

Review status: this preprint is currently under review for the journal WES.

Validation of a modelling methodology for wind turbine rotor blades based on a full scale blade test

Pablo Noever-Castelos1, Bernd Haller2, and Claudio Balzani1 Pablo Noever-Castelos et al.
  • 1Leibniz University Hannover, Institute for Wind Energy Systems, Appelstr. 9A, Hanover, 30167, Germany
  • 2Fraunhofer Institute for Wind Energy Systems IWES, Am Seedeich 45, 27572 Bremerhaven, Germany

Abstract. Detailed 3D finite element simulations are state of the art for structural analyses of wind turbine rotor blades. It is of utmost importance to validate the underlying modelling methodology in order to obtain reliable results. Validation of the global response can ideally be done by comparing simulations with full scale blade tests. However, there is a lack of test results for which the blade data are completely available.

The aim of this paper is to validate one particular blade modelling methodology that is implemented in an in-house model generator, and to provide respective test results to the public. A hybrid 3D shell/solid element model is created including the respective boundary conditions. The problem is solved via a commercially available finite element code. A full scale blade test is performed as the validation reference, for which all relevant data are available. Some data have been measured prior to or after the test in order to account for manufacturing deviations. The tests comprise classical bending tests in flap-wise and lead-lag direction as well as torsion tests.

For the validation of the modelling methodology, global blade characteristics from measurements and simulation are compared. These include the overall mass and centre of gravity as well as their distributions along the blade, deflections, strain levels, and natural frequencies and modes. Overall, good agreement is obtained, though some improvements might be required for the response in torsion. As a conclusion, the modelling strategy can be rated as validated.

Pablo Noever-Castelos et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • CC1: 'Comment on wes-2021-24', Vincent Maes, 30 Apr 2021
    • AC1: 'Reply on CC1', Pablo Noever Castelos, 30 Apr 2021
      • CC2: 'Reply on AC1', Vincent Maes, 30 Apr 2021
  • AC2: 'Comment on wes-2021-24', Pablo Noever Castelos, 27 May 2021
  • RC1: 'Comment on wes-2021-24', Sarah Barber, 21 Jul 2021
  • RC2: 'Comment on wes-2021-24', Martin Eder, 30 Sep 2021

Pablo Noever-Castelos et al.

Data sets

Full scale blade test of a 20 m wind turbine blade within the SmartBlades2 project Haller, Bernd; Noever-Castelos, Pablo https://doi.org/10.5281/zenodo.4605409

Pablo Noever-Castelos et al.

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Short summary
Modern rotor blade designs depend on detailed numerical models and simulations. Thus, a validated modelling methodology is fundamental for reliable designs. This paper briefly presents a modelling algorithm for rotor blades, its validation against real life full scale blade tests and the respective test data. The hybrid 3D shell/solid finite element model is successfully validated against the conducted classical bending tests in flap-wise and lead-lag direction as well as novel torsion tests.