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研究生: 盧庭毅
Lu, Tin-Yi
論文名稱: 滑航艇艉隧道流場之數值模擬分析
Numerical Simulation of Planing Craft Tunnel's Flow Field
指導教授: 陳政宏
Chen, Jeng-Horng
學位類別: 碩士
Master
系所名稱: 工學院 - 系統及船舶機電工程學系
Department of Systems and Naval Mechatronic Engineering
論文出版年: 2011
畢業學年度: 99
語文別: 中文
論文頁數: 87
中文關鍵詞: 滑航艇艉隧道阻力計算流體力學
外文關鍵詞: Planing craft, tunnels, resistance, CFD
相關次數: 點閱:118下載:11
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  • 近幾年來計算流體力學(Computational Fluid Dynamics, CFD)已經應用在船舶流體力學上面,由於現今電腦的性能提高也增加了運算的能力,不僅可以解決較複雜的流體問題,還可取得多點的資料剖析。    
      本研究利用計算流體力學軟體分析聯合船舶設計發展中心的「70呎Sport Fisherman」滑航艇艉隧道之速度流場量測,同時也比較動力特性(兩個自由度pitch、heave)、阻力(摩擦、剩餘、裸船)與壓力分佈。由研究中發現在有艉隧道與無艉隧道兩個船型研究中,與實驗比較結果都相當接近,證明STAR-CCM+模擬結果在船舶阻力與動力特性上都具有一定的準確度,而艉隧道速度流場與實驗(PIV、LDV)比較也相當接近,在可視化中我們也可清楚看出船型對船舶性能之優缺。透過本研究對於船模數值模擬分析結果可發現,船舶之設計可以透過數值計算方法於電腦上做實體模擬,能有效地提升整體的效率。

    Computational Fluid Dynamics (CFD) has been applied on ship hydrodynamics. Because nowadays with enhanced performance, computer not only solve the complex fluid problems, but also obtain the multi-location analysis.
    This study uses computation hydrodynamics software to analyze the flow field of the ship model of “70 ft Sport Fisherman” yacht with the tunnel designed by United Ship Design and Development Center. The study also compares the dynamic performance (two degrees of freedom: pitch and heave), the resistance (friction, residual and total resistance) and the pressure distribution. In this research, the simulation results for hulls with tunnel and without tunnel are similar to experiment results for the resistance. The simulation results of the flow field is very close to the experiment results by PIV and LDV measurement, particularly with stern tunnel. From the visualization of simulation results, it could identify the influence of stern tunnel on the ship performance. By this research, it shows the simulation method could improve the ship designing process .

    摘要 I Abstract II 致謝 III 目錄 IV 表目錄 VI 圖目錄 VII 符號表 X 第一章 緒論 1 1.1 研究動機 1 1.2 文獻回顧 4 1.3 研究目的 7 第二章 研究理論 8 2.1 基本假設 8 2.2 動力理論 10 2.3 紊流模型 12 2.4 近壁處理 (near-wall treatment) 15 2.5 模型設計與研究條件 19 第三章 模擬方法 24 3.1 概述 24 3.2 空間流場解析 25 3.3 統御方程式 26 3.4 離散方程式 29 3.5 演算法 32 3.6 邊界條件與參數設定 34 3.7 網格獨立與模擬正確性 36 第四章 模擬結果與討論 44 4.1 動力特性 44 4.2 阻力 49 4.3 壓力分佈 57 4.4 流體速度 61 第五章 結論與未來展望 84 5.1 結論 84 5.2 未來展望 85 參考文獻 86

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    施勝傑(2011),應用都卜勒測速儀於拖航水槽船模艉隧道流場量測,國立成功大學系統及船舶機電工程研究所碩士論文。

    陳政宏、徐玉樹、林建和、蔡佳育、陳順榮(2008),70呎Sport Fisherman船模試驗報告,聯設高值化遊艇技術發展三年計畫成果報告(編號:USDDC-221-T158(97))。

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