碩士 / 國立成功大學 / 土木工程學系 / 105 / For at least 20-year design lifetime, it is necessary to assess the environmental loads first. This thesis is divided into three parts. The first part deals with the development of environmental load module including wind models, wave models, and current models on the basis of IEC61400-1, IEC61400-3, and DNV-RP-C205. For aerodynamic loads, the Turbsim program developed by National Renewable Energy Laboratory (NREL) was employed to simulate turbulent inflow, and the FAST program was used to calculate wind loads acting on the rotor-nacelle assembly. For hydrodynamic loads, the Stream function wave theory and the Second-order kinematics model were used to simulate wave kinematics in regular waves and irregular waves respectively. After the superposition of wave velocities and current velocities, the hydrodynamic loads acting on the support structure were obtained by using the Morison’s equation. The second part describes integration of the input files from related computer aided programs. The functions of copying, looping, and listing were added to the common input file for generating design load cases rapidly, and the parallel processing techniques were used to enhance calculation efficiency. The third part introduces the parameter setting in the common input file for establishing a finite element model and design load cases according to NREL 5-MW reference wind turbine and IEC 61400-3 standard. Note that the computer programs developed by the research team of Shen-Haw Ju are open and free to use.
| Identifer | oai:union.ndltd.org:TW/105NCKU5015021 |
| Date | January 2017 |
| Creators | Yu-Chuan,Chiu, 邱毓權 |
| Contributors | Shen-Haw Ju, 朱聖浩 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 144 |
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