• Title/Summary/Keyword: Coupled Aero-Hydro-Servo-Elastic Simulation

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Benchmark test of large scale offshore wind turbine with jacket foundation

  • Baek, Jaeha;Park, Hyunchul;Shi, Wei;Lee, Jusang;Lee, Jongsun
    • 한국신재생에너지학회:학술대회논문집
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    • 2011.11a
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    • pp.37.2-37.2
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    • 2011
  • Nowadays, offshore wind energy experiences a rapid development because of its wind condition and no noise impact problem. Different from Europe, offshore wind is just started in Asia. More work and research are needed in Korea. In this work, a three-bladed upwind variable speed pitch controlled 5MW wind turbine on a jacket support structure is used. During the simulation, several design load cases are investigated in two different fully coupled aero-hydro-servo-elastic codes. Some critical loads on the foundation are compared and analyzed.

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Load analysis of an offshore monopile wind turbine using fully-coupled simulation (Fully-coupled 시뮬레이션을 이용한 해상 monopile 풍력 발전기의 응력해석)

  • Shi, Wei;Park, Hyun-Chul
    • 한국신재생에너지학회:학술대회논문집
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    • 2009.06a
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    • pp.480-485
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    • 2009
  • Offshore wind energy is gaining more attention. Ensuring proper design of offshore wind turbines and wind farms require knowledge of the external conditions in which the turbines and associated facilities are to operate. In this work, a three-bladed 5MW upwind wind turbine, which is supported by the monopile foundation, is studied by use of fully coupled aero-hydro-servo-elastic commercial simulation tool, 'GH-Bladed'$^{(R)}$. Specification of the structures are chosen from the OC3 (Offshore Code Comparison Collaboration) under "IEA Wind Annex XXIII-subtask2". The primary external conditions due to wind and waves are simulated. Design Load case 5.2 is investigated in this work. The steady state power curve and power production loads are evaluated. Comparison between different codes is made.

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Floating offshore wind turbine system simulation

  • Shi, Wei;Park, Hyeon-Cheol;Jeong, Jin-Hwa;Kim, Chang-Wan;Kim, Yeong-Chan
    • 한국신재생에너지학회:학술대회논문집
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    • 2009.11a
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    • pp.466-472
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    • 2009
  • Offshore wind energy is gaining more and more attention during this decade. For the countries with coast sites, the water depth is significantly large. This causes attention to the floating wind turbine. Offshore wind turbines are designed and analyzed using comprehensive simulation codes that account for the coupled dynamics of the wind inflow, aerodynamics, elasticity and controls of the wind turbine, along with the incident waves, sea current, hydrodynamics, and foundation dynamics of the support structures. In this work, a three-bladed 5MW upwind wind turbine installed on a floating spar buoy in 320m of water is studied by using of fully coupled aero-hydro-servo-elastic simulation tool. Specifications of the structures are chosen from the OC3 (Offshore Code Comparison Collaboration) under "IEA Wind Annex XXIII-subtask2". The primary external conditions due to wind and waves are simulated. Certain design load case is investigated.

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Introduction to the NREL Design Codes for System Performance Test of Wind Turbines - Part I : Preprocessor (풍력터빈 시스템 성능평가를 위한 NREL 프로그램군에 관한 소개 - 전처리기를 중심으로)

  • Bang, Je-Sung;Rim, Chae Whan;Chung, Tae Young
    • 한국신재생에너지학회:학술대회논문집
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    • 2011.11a
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    • pp.41.2-41.2
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    • 2011
  • NREL NWTC Deside codes are analyzed and introduced to develop the system performance simulation program for wind turbine generator systems. In this paper, The AirfoilPrep generating the airfoil data, the IECWind generating hub-height wind data with extreme condition following IEC 61400-1, the TurbSim generating stochastic full-field turbulent wind data, the PreComp calculating structural and dynamic properties of composite blade and the BModes making mode shapes of blade and tower are explained respectively.

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