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    Researchers’ from Inha University Report Details of New Studies and Findings in the Area of Ocean Engineering (Analysis of Dynamic Response Characteristics for 5 MW Jacket-type Fixed Offshore Wind Turbine)


    November 17, 2021 - Engineering Daily News

     

      2021 NOV 17 (NewsRx) -- By a News Reporter-Staff News Editor at Engineering Daily News -- Current study results on ocean engineering have been published. According to news originating from Inha University by NewsRx editors, the research stated, “This study aims to evaluate the dynamic responses of the jacket-type offshore wind turbine using FAST software (Fatigue, Aerodynamics, Structures, and Turbulence).”

      Financial supporters for this research include Ministry of Trade, Industry and Energy; Korea Institute for Advancement of Technology; Daewoo Shipbuilding Engineering Co., Ltd; National Research Foundation of Korea.

      Our news correspondents obtained a quote from the research from Inha University: “A systematic series of simulation cases of a 5 MW jacket-type offshore wind turbine, including wind-only, wave-only, wind & wave load cases are conducted. The dynamic responses of the wind turbine structure are obtained, including the structure displacement, rotor speed, thrust force, nacelle acceleration, bending moment at the tower bottom, and shear force on the jacket leg. The calculated time-domain results are transformed to frequency domain results using FFT and the environmental load with more impact on each dynamic response is identified. It is confirmed that the dynamic displacements of the wind turbine are dominant in the wave frequency under the incident wave alone condition, and the rotor thrust, nacelle acceleration, and bending moment at the bottom of the tower exhibit high responses in the natural frequency band of the wind turbine. In the wind only condition, all responses except the vertical displacement of the wind turbine are dominant at three times the rotor rotation frequency (considering the number of blades) generated by the wind. In a combined external force with wind and waves, it was observed that the horizontal displacement is dominant by the wind load.”

      According to the news reporters, the research concluded: “Additionally, the bending moment on the tower base is highly affected by the wind. The shear force of the jacket leg is basically influenced by the wave loads, but it can be affected by both the wind and wave loads especially under the turbulent wind and irregular wave conditions.”

      For more information on this research see: Analysis of Dynamic Response Characteristics for 5 MW Jacket-type Fixed Offshore Wind Turbine. hangughaeyanggonghaghoeji, 2021,35(5):347-359. (hangughaeyanggonghaghoeji - http://joet.org/). The publisher for hangughaeyanggonghaghoeji is The Korean Society of Ocean Engineers.

      A free version of this journal article is available at https://doi.org/10.26748/KSOE.2021.058.

      Our news editors report that more information may be obtained by contacting Jaewook Kim, Inha University.

      (Our reports deliver fact-based news of research and discoveries from around the world.)

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