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系統識別號 U0026-0708201416343800
論文名稱(中文) 應用FLOW-3D模擬斜坡矩形束縮渠道之斜震波研究
論文名稱(英文) Application of Flow-3D on shock wave simulation in an inclined rectangular chute construction
校院名稱 成功大學
系所名稱(中) 水利及海洋工程學系
系所名稱(英) Department of Hydraulics & Ocean Engineering
學年度 102
學期 2
出版年 103
研究生(中文) 蕭凱文
研究生(英文) Kai-Wen Hsiao
學號 N86014144
學位類別 碩士
語文別 中文
論文頁數 140頁
口試委員 指導教授-詹錢登
口試委員-賴進松
口試委員-王筱雯
口試委員-賴悅仁
口試委員-曾文孝
中文關鍵字 斜震波  FLOW-3D  斜坡矩形束縮渠道  員山子分洪渠道 
英文關鍵字 Shock wave  Inclined chute contraction  FLOW-3D  Yuanshanzih Flood Channel 
學科別分類
中文摘要 束縮渠道是常見的水工結構物,用以銜接兩不同高程及斷面大小之渠道。由於束縮渠岸反作用力的影響,水流流經束縮渠道會產生斜向交波現象,稱之為斜震波 (Shock wave)。張家榮 (2008)曾經進行實驗研究探討水流流經斜坡矩形束縮渠道所產生之斜震波特性。本研究以張家榮的斜坡矩形束縮渠道實驗模型佈置為基礎,使用三維水流數值模式 (FLOW-3D)來模擬束縮渠道上之斜震波現象。由於斜坡矩形束縮渠道實驗模型包含水平段及斜坡段,因此使用多重網格功能將水平段及斜坡段分開處理以減少網格數量及增加運算效率。依據FLOW-3D數值模擬結果,分析 (1)斜震波縱斷面及橫斷面之水深、 (2)斜震波波角、 (3)斜震波交波位置、及 (4)斜震波交波波高等特性與水流入流條件之關係。
數值模擬結果並與張家榮的實驗結果相比較,結果顯示數值模擬結果與張家榮實驗結果極為相似,此說明FLOW-3D能夠有效模擬斜坡矩形束縮渠道斜震波現象。經由數值模擬本研究將張家榮實驗所得之經驗關係式的入流福祿數適用範圍從福祿數3.51提升至7.27。此外,本研究進一步應用FLOW-3D模擬員山子分洪斜坡矩形束縮渠道的斜震波,分別以納莉颱風流量及200年重現期距流量作為入流模擬條件,探討員山子分洪斜坡矩形束縮渠道的斜震波水理特性,並比較有導流墩設置及無導流墩設置對斜震波水理特性之影響。
英文摘要 This study presents the results of numerical simulations on the characteristics of hydraulic shock waves in an inclined chute contraction. A three-dimensional numerical hydraulic simulation model FLOW-3D is applied to the simulation of hydraulic shockwaves. This numerical model has been proved having good ability in simulating hydraulic shock waves through the comparison with experimental results. The simulated shock waves parameters such as the shock angle, maximum shock wave height and maximum shock waves position for various conditions are compared with those calculated by the empirical relations obtained in the predecessor's research. The numerical results validate the applicability of these empirical relations and also extend their applicability to higher approach Froude numbers. In addition, this study applys three-dimensional numerical model to study the characteristics of hydraulic shock waves in Yuanshanzih Flood Channel. Compare the effect of diversion pier under 200-yr return period accumulative rainfall.
論文目次 目錄
中文摘要 I
英文摘要 II
目錄 X
表目錄 XII
圖目錄 XIII
第一章 緒論 1
1-1研究動機 1
1-2研究目的 1
1-3研究流程 3
1-4本文架構 4
第二章 文獻回顧 5
2-1斜震波之研究 5
2-2 FLOW-3D 應用之研究 12
第三章 數值模式 14
3-1 FLOW-3D 數值模式簡介 14
3-2 FLOW-3D基本理論 15
3-2-1 Navier-Stokes 控制方程式 15
3-2-2 FLOW-3D 控制方程式 16
3-2-3 流體體積法 (Fractional Volume of Fluid Method,VOF) 18
3-2-4 紊流模式 (Turbulence Models) 19
3-3 FLOW-3D數值方法 23
3-3-1 FLOW-3D離散方式 23
3-3-2 網格處理方式 24
3-3-3 FLOW-3D數值穩定 29
第四章 數值模擬及結果分析 31
4-1 FLOW-3D數值模擬 31
4-1-1 斜坡矩形束縮渠道模型建立 32
4-1-2 網格獨立性分析 (Grid independence) 33
4-1-3 數值模擬網格建立 39
4-1-4 邊界條件及初始條件設定 40
4-1-5 數值模擬數值設定 44
4-2 三維數值模擬結果展示 46
4-2-1 斜坡矩形束縮渠道數值模擬結果 56
4-2-2 數值模擬及實驗分析比較 58
4-3 數值模擬結果分析 61
4-3-1 斜震波之波角 61
4-3-2 斜震波之交波位置 63
4-3-3 斜震波之交波波高 65
4-3-4 福祿數適用性 68
第五章 斜坡矩形束縮渠道案例分析 71
5-1 員山子分洪背景概述 71
5-2 員山子分洪數值模擬 74
5-3 數值結果分析 77
第六章 結論及建議 82
6-1 研究結論 82
6-2 研究建議 83
參考文獻 84
附錄 數值模擬三維及縱橫斷面成果圖 90
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