Roland Schmehl

Den Haag, Zuid-Holland, Nederland Contactgegevens
3K volgers Meer dan 500 connecties

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Specialties: airborne wind energy, computational fluid dynamics, moving boundary…

Artikelen van Roland

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Ervaring en opleidingen

  • Airborne Wind Europe

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Licenties en certificaten

Publicaties

  • An Aero-Structural Model for Ram-Air Kite Simulations

    MDPI Energies

    Similar to parafoils, ram-air kites are flexible membrane wings inflated by the apparent wind and supported by a bridle line system. A major challenge in estimating the performance of these wings using a computer model is the strong coupling between the airflow around the wing and the deformation of the membrane structure. In this paper, we introduce a staggered coupling scheme combining a structural finite element solver using a dynamic relaxation technique with a potential flow solver. The…

    Similar to parafoils, ram-air kites are flexible membrane wings inflated by the apparent wind and supported by a bridle line system. A major challenge in estimating the performance of these wings using a computer model is the strong coupling between the airflow around the wing and the deformation of the membrane structure. In this paper, we introduce a staggered coupling scheme combining a structural finite element solver using a dynamic relaxation technique with a potential flow solver. The developed method proved numerically stable for determining the equilibrium shape of the wing under aerodynamic load and is thus suitable for performance measurement and load estimation. The method was validated with flight data provided by SkySails Power. Measured forces on the tether and steering belt of the robotic kite control pod showed good resemblance with the simulation results. As expected for a potential flow solver, the kite’s glide ratio was overestimated by 10–15%, and the measured tether elevation angle in a neutral flight scenario matched the simulations within 2 degrees. Based on the obtained results, it can be concluded that the proposed aero-structural model can be used for initial designs of ram-air kites with application to airborne wind energy.

    Andere auteurs
    • Paul Thedens
    Publicatie weergeven
  • Airborne Wind Energy - Advances in Technology Development and Research

    Springer

    Our second book published by Springer, expanding the first book from 2013 by 30 new chapters on more than 750 pages contributed by authors from academia and industry about the multi-disciplinary challenges and opportunities of the emerging technology.

    Publicatie weergeven
  • Airborne Wind Energy

    Springer

    Our first book published by Springer covering the multi-disciplinary challenges and opportunities of the emerging technology in 35 chapters on more than 600 pages contributed by authors from academia and industry.

    Andere auteurs
    Publicatie weergeven

Projecten

Talen

  • English

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  • German

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  • Dutch

    Professionele werkvaardigheid

  • French

    Beperkte werkvaardigheid

Organisaties

  • Airborne Wind Europe

    Board Member

    - heden
  • FGW e.V. Fördergesellschaft Windenergie und andere Erneuerbare Energien

    Member

    - heden
  • TU Delft Wind Energy Institute (DUWIND)

    Member

    - heden

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