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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 郭真祥(Jen-Shiang Kouh) | |
dc.contributor.author | Yin-Chi Li | en |
dc.contributor.author | 李引棋 | zh_TW |
dc.date.accessioned | 2021-06-16T13:01:40Z | - |
dc.date.available | 2014-08-14 | |
dc.date.copyright | 2013-08-14 | |
dc.date.issued | 2013 | |
dc.date.submitted | 2013-08-07 | |
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D., Butterfield, S., Jonkman, J., and Musial, W., “Coupled Dynamic Modeling of Floating Wind Turbine Systems,” Offshore Technology Conference, 1–4 May, 2006. [31] Sebastian, T, and Lackner, M A, “ Comparison of First-Order Aerodynamic Analysis Methods for Floating Wind Turbines,” 48th AIAA Aerospace Sciences Meeting, Orlando, Florida, 2010. [32] D. Matha and M. Schlipf, “Challenges in Simulation of Aerodynamics, Hydrodynamics, and Mooring-Line Dynamics of Floating Offshore Wind Turbines,” 2011. [33] Lucas J., “Comparison of First and Second-Order Hydrodynamic Results for Floating Offshore Wind Structures,” GL Garrad Hassan, Report Ref: 11594br02a, 2011. [34] Pape, A., and Lecanu, J., “3D Navier–Stokes computations of a stall-regulated wind turbine,” Wind Energy, 7(4), pp. 309–324, 2004. [35] Duque, E., Burklund, M., and Johnson, W., “Navier-Stokes and comprehensive analysis performance predictions of the NREL phase VI experiment.” Journal of Solar Energy Engineering, 125, p. 457, 2003. [36] Tongchitpakdee, C., Benjanirat, S., and Sankar, L., “Numerical simulation of the aerodynamics of horizontal axis wind turbines under yawed flow conditions,” Journal of solar energy engineering, 127, p. 464, 2005. [37] Mentor, F. R.: Two-Equation Eddy Viscosity Turbulence Models for Engineering Applications. AIAA J. 32, 1299 -1310, 1994. [38] R.W.Fox, A.T.McDonald, P.J.Pritchard, “Introduction To Fluid Mechinics,” New York, NY :John Wiley & Sons,INC, 2004, [39] 周文祥,穿浪式雙體船之阻力計算與分析,國立台灣大學,民98。 [40] J. Jonkman and W. Musial, 'Offshore Code Comparison Collaboration (OC3) for IEA Task 23 Offshore Wind Technology and Deployment,' Contract, vol. 303, pp. 275-3000, 2010. [41] OC4研究計畫。取自 http://www.ieawind.org/task_30/task30_OC4_Semisubmersible.html [42] CD-adapco, :Star-ccm+ Version 7.04.011 UserGuide, 2012. [43] L.O. Garza-Rios, M.,M. Bernitsas, K.Nishimoto, “Catenary Mooring Lines with Nonlinear Drag and Touchdown,” 1997.. [44] 李雅榮,”船體結構學”。 [45] Jonkman J., Butterfield S., Musial W., and Scott G., “Definition of a 5-MW Reference Wind Turbine for Offshore System Development,” NREL/TP-500-38060, Golden, CO: NREL, 2009. [46] Robert McNeel and Associates, “Rhinoceros v3.0 UserGuide,” 2005. [47] J. Jonkman and W. Musial, 'Offshore Code Comparison Collaboration (OC3) for IEA Task 23 Offshore Wind Technology and Deployment,' Contract, vol. 303, pp. 275-3000, 2010. [48] UIUC Airfoil Wind Tunnel。取自 http:// www.ae.illinois.edu/m-selig/ads/coord_database.html [49] Thomas Solberg, “Dynamic Response Analysis of a Spar Type Floating Wind Turbine,“ 2011. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/61365 | - |
dc.description.abstract | 本論文探討Spar型浮體式風力發電機及Semi-submersible型浮體式風力機受風與波浪耦合作用下運動之數值模擬研究。研究方法為求解雷諾平均那維爾史托克方程式,並選用適當的紊流模型及搭配額外JAVA副程式來考量錨鏈力。風力機部分為NREL 5MW,陸上運轉模擬結果與NREL之資料相驗證,轉子功率計算結果與資料趨勢符合,誤差皆於8%以內。海上運轉模擬部分在均勻風速11.4 m/s,以及波高4 m,周期10 秒、波向角0度之規則波中進行縱搖運動及同時開放縱移、浮沉及縱搖三自由度運動。由模擬結果顯示浮體式風力機因縱搖運動造成的功率變動量可觀,如考慮真實風力機之控制情形,平均功率則會耗損。
由Spar型浮體式風力機進行開放縱移、浮沉及縱搖三自由度運動之海上運轉模擬結果為例,縱搖角度範圍為-3.59 ~ -6.03度,且風力機在運動過程中,功率變動量達+32% ~ -36%,平均功率減少1.39 %,如考慮真實風力機之控制情形,平均功率則減少9.17%;而Semi-submersible型浮體式風力機進行開放縱移、浮沉及縱搖三自由度運動之海上運轉模擬,縱搖角度範圍為-3.50 ~ -5.04度,在運動過程中,功率變動量達+6% ~ -10%,平均功率減少0.99 %,如考慮真實風力機之控制情形,平均功率則減少2.61%。根據本研究之模擬結果建議使用Semi-submersible型之浮體平台搭配風力機,以降低實際運轉發電時平均功率之耗損。 | zh_TW |
dc.description.abstract | This research investigated numerical study of spar type and semi-submersible type floating wind turbine doing motion under the coupling of aerodynamic and hydrodynamic loads. We use computational fluid dynamics package and solve the flow field by using Reynolds-averaged Navier-Stokes equations (RANS) solver with a proper turbulent model and also use the java code to compute the mooring line force. NREL 5MW is choosed as our wind turbine. For the onshore simulation case, the result is verified with the NREL simulation results, the errors are less than 8%. And the offshore simulation case is the wind turbine doing pitch motion or doing surge, heave and pitch motion simultaneously in the wave height 4 m, wave period 10 s regular head wave with uniform wind speed 11.4 m/s. The simulation result shows that the rotor power changes dramatically because of the wind turbine’s pitch motion. And if we consider the real wind turbine control system situation, the average power will be reduced.
In the case of the spar type floating wind turbine doing doing surge, heave and pitch motion simultaneously, the result shows that the spar type floating wind turbine has the pitch angle range from -3.59 to -6.03 degrees, and the rotor power change is up to +32 % to -36 %, and the average power is reduced by 1.39%, and if we consider the real wind turbine control system situation, the average power is reduced by 9.17 %. In the case of the semi-submersible type floating wind turbine doing doing surge, heave and pitch motion simultaneously, the result shows that the spar type floating wind turbine has the pitch angle range from -3.50 to -5.04 degrees, and the rotor power change is up to +6 % to -10 %, and the average power is reduced by 0.99%, and if we consider the real wind turbine control system situation, the average power is reduced by 2.61 %. According to this research, we recommend the semi-submersible floating platform in order to reduce the floating wind turbine’s power loss. | en |
dc.description.provenance | Made available in DSpace on 2021-06-16T13:01:40Z (GMT). No. of bitstreams: 1 ntu-102-R00525008-1.pdf: 8098574 bytes, checksum: c521846cd0dfcacc706f05ef9c655112 (MD5) Previous issue date: 2013 | en |
dc.description.tableofcontents | 誌謝 i
中文摘要 ii ABSTRACT iii CONTENTS v 圖目錄 viii 表目錄 xiv Chapter 1 緒論 1 1.1 研究背景 1 1.2 離岸風力發電發展與浮體式風力機介紹 3 1.3 文獻回顧 12 1.4 研究目的與方法 14 1.5 本文架構 18 Chapter 2 理論基礎 19 2.1 計算流體力學 19 2.1.1 統御方程式 19 2.1.2 紊流模型 21 2.1.3 壁面函數 23 2.1.4 數值方法 25 2.1.5 自由液面 25 2.2 剛體運動 26 2.2.1 風力機轉子轉動方式 26 2.2.2 浮體式風力機六自由度剛體運動 28 2.2.3 波浪運動 30 2.3 錨鏈系統 31 Chapter 3 風力機陸上運轉計算與驗證 37 3.1 風力發電機資料與幾何參數 37 3.1.1 風力發電機 37 3.2 二維翼型模擬與驗證 43 3.2.1 網格佈置與邊界條件 43 3.2.2 二維翼型模擬結果 47 3.3 陸上運轉部分之流場範圍與邊界條件 49 3.3.1 流場範圍與邊界條件 49 3.3.2 流場範圍與邊界條件驗證 52 3.4 網格佈置策略 54 3.5 網格獨立性探討 55 3.5.1 邊界層柱狀體積網格 56 3.5.2 近風力機轉子區域網格 57 3.5.3 外部流場網格 60 3.6 風力機陸上運轉計算結果驗證與討論 62 Chapter 4 浮體式風力發電機海上運轉計算 71 4.1 浮體平台幾何模型與錨鏈系統 71 4.1.1 Spar型浮體平台及錨鏈系統 71 4.1.2 Semi-submersible型浮體平台及錨鏈系統 80 4.2 浮體式風力機海上運轉模擬條件之概述 87 4.3 流場範圍與邊界條件 89 4.4 純波浪驗證 93 4.5 網格佈置策略 98 4.6 浮體式風力機海上運轉之時域模擬結果 99 4.6.1 Spar型浮體式風力機固定狀態 100 4.6.2 Spar型浮體式風力機開放縱搖運動(無錨鍊) 101 4.6.3 Spar型浮體式風力機開放縱移、起伏及縱搖三自由度運動(有錨鍊) 113 4.6.4 Semi-submersible型浮體式風力機開放縱搖運動(無錨鍊) 116 4.6.5 Semi-submersible型浮體式風力機開放縱搖運動(有錨鍊) 118 4.6.6 Semi-submersible型浮體式風力機開放縱移、起伏及縱搖三自由度運動(有錨鍊) 126 4.7 浮體式風力機海上運轉模擬結果驗證與分析討論 128 4.7.1 時域模擬結果分析 129 4.7.2 頻域分析 136 Chapter 5 結論 141 REFERENCE 143 | |
dc.language.iso | zh-TW | |
dc.title | 浮體式風力機受風與波浪耦合作用下運動之數值模擬研究 | zh_TW |
dc.title | Numerical Simulation of Floating Wind Turbine Motion under the Coupling of Aerodynamic and Hydrodynamic Loads | en |
dc.type | Thesis | |
dc.date.schoolyear | 101-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 方銘川(Ming-Chung Fang),蔡進發(Jing- Fa Tsai),趙修武(Shiu-Wu Chau) | |
dc.subject.keyword | 計算流體力學,Spar型浮體平台,Semi-submersible型浮體平台,浮體式風力機, | zh_TW |
dc.subject.keyword | CFD,spar-type platform,semi-submersible platform,floating wind turbine, | en |
dc.relation.page | 147 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2013-08-07 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 工程科學及海洋工程學研究所 | zh_TW |
顯示於系所單位: | 工程科學及海洋工程學系 |
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