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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 盧南佑 | zh_TW |
| dc.contributor.advisor | Nan-You Lu | en |
| dc.contributor.author | 劉士豪 | zh_TW |
| dc.contributor.author | Shih-Hao Liou | en |
| dc.date.accessioned | 2025-11-27T16:08:17Z | - |
| dc.date.available | 2025-11-28 | - |
| dc.date.copyright | 2025-11-27 | - |
| dc.date.issued | 2025 | - |
| dc.date.submitted | 2025-10-15 | - |
| dc.identifier.citation | [1] <臺灣2050淨零排放路徑及策略總說明.pdf>.
[2] 4C Offshore. from https://www.4coffshore.com/ [3] Ørsted Taiwan. Retrieved Oct.31, 2023, from https://orsted.tw/ [4] <[3]Wake behind an offshore wind farm observed with dual-Doppler radars.pdf>. [5] Gao, X., Li, B., Wang, T., Sun, H., Yang, H., Li, Y., . . . Zhao, F. (2020). Investigation and validation of 3D wake model for horizontal-axis wind turbines based on filed measurements. Applied Energy, 260, 114272. [6] Cheng, K.-S., Ho, C.-Y., & Teng, J.-H. (2022). Wind and sea breeze characteristics for the offshore wind farms in the central coastal area of Taiwan. Energies, 15(3), 992. [7] Contestabile, P., Russo, S., Azzellino, A., Cascetta, F., & Vicinanza, D. (2022). Combination of local sea winds/land breezes and nearshore wave energy resource: Case study at MaRELab (Naples, Italy). Energy Conversion and Management, 257, 115356. [8] Storey, R., Cater, J., & Norris, S. (2016). Large eddy simulation of turbine loading and performance in a wind farm. Renewable Energy, 95, 31-42. [9] Revaz, T., & Porté-Agel, F. (2021). Large-eddy simulation of wind turbine flows: A new evaluation of actuator disk models. Energies, 14(13), 3745. [10] Bénard, P., Viré, A., Moureau, V., Lartigue, G., Beaudet, L., Deglaire, P., & Bricteux, L. (2018). Large-eddy simulation of wind turbines wakes including geometrical effects. Computers & Fluids, 173, 133-139. [11] Vollmer, L., Van Dooren, M., Trabucchi, D., Schneemann, J., Steinfeld, G., Witha, B., . . . Kühn, M. (2015). First comparison of LES of an offshore wind turbine wake with dual-Doppler lidar measurements in a German offshore wind farm. Paper presented at the Journal of Physics: Conference Series. [12] Valldecabres, L., Nygaard, N. G., Vera-Tudela, L., Von Bremen, L., & Kühn, M. (2018). On the use of dual-doppler radar measurements for very short-term wind power forecasts. Remote Sensing, 10(11), 1701. [13] Van Dooren, M. F., Trabucchi, D., & Kühn, M. (2016). A methodology for the reconstruction of 2D horizontal wind fields of wind turbine wakes based on dual-Doppler lidar measurements. Remote Sensing, 8(10), 809. [14] Ren, J., Niu, W., & Liu, H. (2022). Wind turbine wake calculation model with exponential reciprocal attenuation. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 236(12), 6521-6529. [15] Sørensen, J. N., Mikkelsen, R. F., Henningson, D. S., Ivanell, S., Sarmast, S., & Andersen, S. J. (2015). Simulation of wind turbine wakes using the actuator line technique. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 373(2035), 20140071. [16] Abbas, N. J., Zalkind, D. S., Pao, L., & Wright, A. (2022). A reference open-source controller for fixed and floating offshore wind turbines. Wind Energy Science, 7(1), 53-73. doi: 10.5194/wes-7-53-2022 [17] 歐洲新歐洲風能圖集. from https://map.neweuropeanwindatlas.eu/ [18] Jonkman, J., Butterfield, S., Musial, W., & Scott, G. (2009). Definition of a 5-MW reference wind turbine for offshore system development: National Renewable Energy Lab.(NREL), Golden, CO (United States). [19] Quon, E. (2020). "README.SOWFA. ". Retrieved Oct.21, 2021, from https://github.com/NREL/SOWFA-6.git [20] OpenFAST v3.0.0 Documentation. (2021). from https://openfast.readthedocs.io/en/main/index.html [21] Churchfield, M. J., Lee, S., Michalakes, J., & Moriarty, P. J. (2012). A numerical study of the effects of atmospheric and wake turbulence on wind turbine dynamics. Journal of turbulence(13), N14. [22] Churchfield, M., Lee, S., Moriarty, P., Martinez, L., Leonardi, S., Vijayakumar, G., & Brasseur, J. (2012). A large-eddy simulation of wind-plant aerodynamics. Paper presented at the 50th AIAA aerospace sciences meeting including the new horizons forum and aerospace exposition. [23] Jonkman, J. M., & Buhl, M. L. (2005). FAST user's guide (Vol. 365): National Renewable Energy Laboratory Golden, CO, USA. [24] 廖尚諄. (2023). 應用中尺度到微尺度極端風模型於風機之負載分析. 國立臺灣大學機械工程學系學位論文, 1-86. [25] Lu, N.-Y., Hawbecker, P., Basu, S., & Manuel, L. (2019). On wind turbine loads during thunderstorm downbursts in contrasting atmospheric stability regimes. Energies, 12(14), 2773. [26] Siemens-SWT-6.0-154. from https://en.wind-turbine-models.com/turbines/657-siemens-swt-6.0-154 | - |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/101067 | - |
| dc.description.abstract | 近年台灣離岸風電工程快速發展，但風機所產生的尾流效應常導致整體場區發電效率低於預期，甚至會波及下游風場的功率推估。然而，實務上對於尾流真實特性的研究仍不充分，特別是缺乏三維空間風速場的實測資料。本研究以丹麥開發商沃旭（Ørsted）在竹南外海風場所部署的雙多普勒雷達觀測資料為基礎，針對冬季東北季風條件下風電場尾流的三維結構進行分析。同時，透過美國國家再生能源實驗室（NREL）所開發之SOWFA模擬工具，重現一段短時間尺度（小於1小時）且高可信度的尾流風場，並將其結果與觀測資料進行比較。藉由此對照，本研究進一步探討真實風況中影響三維尾流不確定性的因子，包括風向擺動、風切變化與海陸風效應等，並檢視模擬在短時尾流變化上可能欠缺的修正項。最終，本研究目標是建立一套完善的三維尾流分析方法，期能為未來台灣離岸風場的效能評估與營運管理提供實質助益。 | zh_TW |
| dc.description.abstract | In recent years, offshore wind power development in Taiwan has grown rapidly. However, wake effects generated by wind turbines often reduce the overall power output of a wind farm below expectations and may even influence the power forecasts of downstream farms. Despite this, comprehensive studies on the actual characteristics of wind farm wakes remain limited, particularly with respect to three-dimensional wind field measurements. This study utilizes dual-Doppler radar data deployed by Ørsted at the Zhunan offshore wind farm to investigate the three-dimensional wake structure under northeast monsoon conditions in winter. In parallel, the Simulator fOr Wind Farm Applications (SOWFA), developed by the U.S. National Renewable Energy Laboratory (NREL), is employed to reproduce a short-duration (less than one hour) but highly reliable wake field. The simulation results are compared against the radar observations to examine factors contributing to wake uncertainties in real atmospheric conditions, such as wind direction variability, wind shear, and land–sea breeze effects. Furthermore, the study evaluates potential missing correction terms in the simulations related to short-term wake dynamics. Ultimately, this research aims to establish an effective methodology for three-dimensional wake analysis, with the expectation of providing significant benefits for performance assessment and operational management of future offshore wind farms in Taiwan. | en |
| dc.description.provenance | Submitted by admin ntu (admin@lib.ntu.edu.tw) on 2025-11-27T16:08:17Z No. of bitstreams: 0 | en |
| dc.description.provenance | Made available in DSpace on 2025-11-27T16:08:17Z (GMT). No. of bitstreams: 0 | en |
| dc.description.tableofcontents | 論文口試審定書 i
誌謝 ii 中文摘要 iii ABSTRACT iv 目次 v 圖次 vii 表次 ix 第一章 緒論 1 1.1研究背景 1 1.2 文獻回顧 2 1.3 論文架構 4 2 第二章 研究方法與流程 6 2.1風場與風機模擬方法 6 2.1.1 LES模型簡介 6 2.1.2 OpenFAST 8 2.1.3 致動線模型 9 2.2 風機控制器 10 2.3 風速觀測資料 12 2.3.1 都卜勒雷達之簡介 12 2.3.2 都卜勒雷達資料之簡介 13 2.3.3 觀測資料與模擬比較方法 14 2.4 研究流程 15 3 第三章 模擬設置 21 3.1 自訂義6MW風機 21 3.2 風場內之風機分布位置 22 3.3 LES風場模擬設置 22 3.4 尾流模擬 23 4 第四章 督卜勒雷達實測資料與模擬結果比較 33 4.1 資料分析可視化 33 4.2 實測資料與模擬結果比較 34 5 第五章 結論與建議 49 5.1 結果與討論 49 5.2 未來展望 49 參考文獻 51 | - |
| dc.language.iso | zh_TW | - |
| dc.subject | 尾流 | - |
| dc.subject | 風電場 | - |
| dc.subject | 雙督卜勒雷達 | - |
| dc.subject | 風場模擬 | - |
| dc.subject | wake | - |
| dc.subject | wind field | - |
| dc.subject | dual-Doppler radar | - |
| dc.subject | wind field simulation | - |
| dc.title | 基於三維風場觀測與大渦流模擬之風機尾流特性研究 | zh_TW |
| dc.title | Investigation of Wind Turbine Wake Characteristics Based on Three-Dimensional Wind Field Observations and Large Eddy Simulations | en |
| dc.type | Thesis | - |
| dc.date.schoolyear | 114-1 | - |
| dc.description.degree | 碩士 | - |
| dc.contributor.oralexamcommittee | 吳亦莊;阮于軒 | zh_TW |
| dc.contributor.oralexamcommittee | Yi-Zhuang Wu;Yu-Hsuan Juan | en |
| dc.subject.keyword | 尾流,風電場雙督卜勒雷達風場模擬 | zh_TW |
| dc.subject.keyword | wake,wind fielddual-Doppler radarwind field simulation | en |
| dc.relation.page | 53 | - |
| dc.identifier.doi | 10.6342/NTU202504557 | - |
| dc.rights.note | 同意授權(限校園內公開) | - |
| dc.date.accepted | 2025-10-15 | - |
| dc.contributor.author-college | 工學院 | - |
| dc.contributor.author-dept | 機械工程學系 | - |
| dc.date.embargo-lift | 2030-10-08 | - |
| 顯示於系所單位： | 機械工程學系 | |
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| ntu-114-1.pdf 未授權公開取用 | 3.34 MB | Adobe PDF | 檢視/開啟 |
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