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| 題 名 | 初探水下浮游式洋流發電機渦流場變化之數值模擬=Numerical Simulation of Vortex Field Variations during FKT Operation |
|---|---|
| 作 者 | 鄭明宏; 黃榮鑑; | 書刊名 | 海岸及海洋工程學刊 |
| 卷 期 | 20:1/2 2024.11[民113.11] |
| 頁 次 | 頁35-44 |
| 分類號 | 448.166 |
| 關鍵詞 | k-ε紊流模式; 浮游式洋流發電機組; 渦流場分析; 數值試驗; k-ε turbulence model; Floating Kuroshio turbine; Vorticity field analysis; Numerical simulations; |
| 語 文 | 中文(Chinese) |
| DOI | 10.6266/JOCOE.202410_20(1_2).0003 |
| 中文摘要 | 臺灣四面環海且東部海岸有黑潮通過,其為臺灣帶來豐沛的洋流能源。為能妥善利用東部黑潮資源,國家海洋研究院於2020年開始繼承以往相關洋流能關鍵技術進行研發及實海測試,並預計2024年開發100kW浮游式洋流發電機組。為能有效瞭解浮游式洋流發電機組在水下的特性,本研究透過三維解析Naver-Stokes方程式並搭配k-ε紊流模式閉合,與加入疊合網格來建置所需要流固耦合之數值模式。針對不同流速進行一連串數值試驗,由結果分析流通過機組時,其後方所產生的渦流場情況變化。由結果可看出隨流速增大,對機組後方會有渦漩生成,藉此進一步瞭解機組本身受流之後產生之特性,作為後續設計或是相關環境分析之重要參考。 |
| 英文摘要 | Taiwan is surrounded by the sea and the Kuroshio current flowing through its eastern coastal part could provide abundant oceanic energy resources. To effectively havest the resources of the Eastern Kuroshio, the National Academy of Marine Research has initiated the research and development, inheriting the key technologies related to ocean current energy since the year of 2020, and began the sea trials. It is anticipated that by the year 2024, the Floating Kuroshio Turbine (FKT) with larger capacity would be developed. To gain a comprehensive understanding of the underwater operations of the FKT, this study employs the 3D Navier-Stokes equations, coupled with the k-ε turbulence model and dynamic mesh techniques to construct a numerical model for fluid-structure interaction. Various flow velocities are tested numerically, and the results are analyzed to investigate the variations in the vortex field generated when the flow passes through the power generation system. The findings indicate that as the flow velocity increases, vortices are generated behind the system. This study aims to further understand the characteristics of the system under the influence of the flow, providing essential insights for subsequent design and environmental analyses. |
本系統中英文摘要資訊取自各篇刊載內容。