研究生: |
陳智翔 Chen, Zhi-Xiang |
---|---|
論文名稱: |
橫向主動繫泊海流發電系統水翼機動模型與斜坡重力錨之設計與縮尺實驗 Development and Experiments of Mobile Hydro Sail and Deadweight-on-slope Anchor Scale Models for the Cross-stream Active Mooring Marine Current Power System |
指導教授: |
曹哲之
Tsao, Che-Chih |
口試委員: |
蔣小偉
Chiang, Hsiao-Wei 陳建宏 Chen, Jiahn-Horng |
學位類別: |
碩士 Master |
系所名稱: |
工學院 - 動力機械工程學系 Department of Power Mechanical Engineering |
論文出版年: | 2021 |
畢業學年度: | 109 |
語文別: | 中文 |
論文頁數: | 263 |
中文關鍵詞: | 黑潮發電 、海流發電系統 、水翼 、錨碇 、水工實驗 、縮尺模型 |
外文關鍵詞: | Kuroshio power generation, ocean current power generation system, hydro sail, anchorage, hydraulic experiment, scale model |
相關次數: | 點閱:2 下載:0 |
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「橫向主動繫泊海流發電系統」為一創新的海流發電系統設計,其目的在系
統性地解決洋流發電上所面臨的水深、海底地質堅硬、流軸偏擺、颱風等主要困
難點。該系統包含「水翼橫向主動繫泊」與「斜坡重力錨」兩大核心設計概念。
藉由調整潛浮於水面下的水翼之攻角、尾翼、重心和浮心位置,使水翼能牽引主
繫纜上的潛浮式渦輪發電機橫向主動繫泊、下潛入深水的流軸中,進而可以調整
渦輪發電機的位置與深度;而斜坡重力錨碇系統,可將錨碇點置於水較淺的海脊
上,以降低深海錨碇的海事工程成本。本研究透過縮尺模型實驗及力學分析,探
討水翼及斜坡重力錨的設計。在水翼模型設計上,首先依照福祿數(Froude number)
製作相應比例的兩種水翼模型,在水箱中測試、分析及驗證兩種水翼模型的橫向
主動繫泊及下潛能力。接著在泳池中,以多個模型構成的長鏈系統陣列進行大規
模系統佈置的實驗,觀測系統維持基本穩定性與橫向主動繫泊的能力。然後設計
製作一水翼機動模型,在水箱及泳池中進行動態試驗,透過搖控方式,改變其重
心與浮心位置及尾翼水平安定面的角度,調整其不同的姿態與佈置位置,對此系
統在橫向主動繫泊、姿態轉換至下潛、對側平飛時的動態移動過程進行觀測。並
經由實驗與分析方式,歸納出水翼系統設計影響穩定性與操作性的主要設計因素
與設計準則。斜坡重力錨的研究中,則以基本力學分析、模型實驗及施工工程考
量,針對組合式錨體的可能結構進行設計。
The Cross-stream Active Mooring (CSAM) is a recently proposed novel technique for mooring marine current power systems in large scale. The technique aims to solve major difficulties in the development of ocean current power generation: water depth, seabed geology, meander of current velocity core and typhoons. The technique features two core concepts, "hydro sail active mooring" and "deadweight-on-slope anchor". Hydro sails attached close to generator turbines on a mooring tether, all in submerged floating state, are applied to stablize and adjust the positions of the generator turbines in the sea, while a set of deadweight anchors, holding the other end of the mooring tether, is placed on a submarine slope facing the current to obtain increased gravity anchoring effect. This research explores designs of the hydro sail and the deadweight-on-slope anchor through scale experiments and analysis. In the study of the hydro sail design, two different designs of models based on 1/500 Froude number (Fr) scaling were made and tested in a water tank to study cross-stream mooring and diving capabilities. Multiple models were connected to form a linear array and the linear array was tested in a swimming pool, with a flow generator, to study deployment and stability of a large-scale CSAM system. To study the dynamic operations of the hydro sail, two different 1/250 mobile models were developed and tested in the water tank and the pool. Through remote control of elevators and a buoy/ballast position-shifting mechanism in the mobile models, operations such as changing deployment angle, rolling and diving were studied and demonstrated. Based on experimental observations and analysis of mechanics, major design parameters and criteria affecting the stability and operability of the hydro sail were summarized and an analytical model was developed. In the study of the deadweight-on-slope anchor, basic mechanical analysis, model experiments and construction engineering considerations were applied to design possible structures of anchor blocks that can be assembled on site to achieve required total anchor capacity.
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