• Active Load Mitigation to Counter the Fatigue Damage Contributions From Unavailability in Offshore Wind Turbines 

      Sørum, Stian Høegh; Smilden, Emil; Amdahl, Jørgen; Sørensen, Asgeir Johan (Chapter, 2018)
      The offshore wind industry continues to grow, but there is still a need for more economical designs. As unavailability conditions can be critical for the fatigue damage in support structures, design standards use conservative ...
    • Comparison of numerical response predictions for a bottom-fixed offshore wind turbine 

      Sørum, Stian Høegh; Horn, Jan-Tore H.; Amdahl, Jørgen (Journal article; Peer reviewed, 2017)
      Numerical simulations are widely used for response calculations on offshore wind turbines. Code-to-code comparisons are frequently used for verification of the codes, as full-scale measurements can be difficult to obtain. ...
    • Post‐installation adaptation of offshore wind turbine controls 

      Smilden, Emil; Sørum, Stian Høegh; Bachynski, Erin Elizabeth; Sørensen, Asgeir Johan; Amdahl, Jørgen (Journal article; Peer reviewed, 2020)
      The cost of offshore wind energy can be reduced by incorporating control strategies to reduce the support structures' load effects into the structural design process. While effective in reducing the cost of support structures, ...
    • Stochastic, Dynamic Analysis of Offshore Wind Turbines 

      Sørum, Stian Høegh (Master thesis, 2017)
      In the last 25 years, offshore wind turbines (OWTs) have moved from small machines of less that 500 kW in a few metres of water to large multi-megawatt machines in water depths exceeding 30 meters. On monopile foundations, ...
    • Validation of Numerical Models of the Offshore Wind Turbine From the Alpha Ventus Wind Farm Against Full-Scale Measurements Within OC5 Phase III 

      Popko, Wojciech; Robertson, Amy; Jonkman, Jason; Wendt, Fabian; Thomas, Philipp; Müller, Kolja; Kretschmer, Matthias L.; Hagen, Torbjørn Ruud; Galinos, Christos; Dreff, Jean-Baptiste Le; Gilbert, Philippe; Auriac, Bertrand; Oh, Sho; Qvist, Jacob; Sørum, Stian Høegh; Suja, Loup; Shin, Hyunkyoung; Molins, Climent; Trubat, Pau; Bonnet, Paul; Bergua, Roger; Wang, Kai; Fu, Pengcheng; Cai, Jifeng; Cai, Zhisong; Alexandre, Armando; Harries, Robert (Chapter, 2019)
      The main objective of the Offshore Code Comparison Collaboration Continuation, with Correlation (OC5) project is validation of aero-hydro-servo-elastic simulation tools for offshore wind turbines (OWTs) through comparison ...
    • Verification of Numerical Offshore Wind Turbine Models Based on Full Scale Alpha Ventus Data within OC5 Phase III 

      Popko, Wojciech; Huhn, Matthias L.; Robertson, Amy N.; Jonkman, Jason M.; Wendt, Fabian; Müller, Kolja; Kretschmer, Matthias L.; Vorpahl, Fabian; Hagen, Torbjørn Ruud; Galinos, Christos; Dreff, Jean-Baptiste Le; Gilbert, Philippe; Auriac, Bertrand; Villora, Francisco Navarro; Schünemann, Paul; Bayati, Ilmas; Oh, Sho; Totsuka, Yoshitaka; Qvist, Jacob; Bachynski, Erin Elizabeth; Sørum, Stian Høegh; Thomassen, Paul Edgar; Shin, Hyun Kyoung; Vittori, Felipe; Galvan, Josean; Molins, Climent; Bonnet, Paul; Zee, Tjeerd van der; Bergua, Roger; Wang, Kai; Fu, Pengcheng; Cai, Jifeng (Chapter, 2018)
      The main objective of the Offshore Code Comparison Collaboration Continuation, with Correlation (OC5) project, is validation of aero-hydro-servo-elastic simulation tools for offshore wind turbines (OWTs) through comparison ...
    • Wind-wave directional effects on fatigue of bottom-fixed offshore wind turbine 

      Sørum, Stian Høegh; Krokstad, Jørgen R; Amdahl, Jørgen (Journal article; Peer reviewed, 2019)
      The current trend for offshore wind energy is that larger turbines are placed on monopile foundations at increasing water depth. This requires larger foundations, increasing the importance of hydrodynamic loading. It is ...