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VOF法에 의한 不透過性潛食 및 透過性潛食 周邊波動場의 碎波를 包含한 full nonlinear 解析에 관한연구
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | 李光浩 | - |
| dc.date.accessioned | 2017-02-22T05:19:06Z | - |
| dc.date.available | 2017-02-22T05:19:06Z | - |
| dc.date.issued | 2002 | - |
| dc.date.submitted | 56797-10-27 | - |
| dc.identifier.uri | http://kmou.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000002173772 | ko_KR |
| dc.identifier.uri | http://repository.kmou.ac.kr/handle/2014.oak/8518 | - |
| dc.description.abstract | Recently, various numerical models for wave breaking have been presented but these models can't analyze wave transformation after wave breaking. In this study, full-nonlinear numerical analysis including wave breaking and transformation after breaking has been performed in the two-dimensional numerical wave channel, installed impermeable and permeable submerged breakwater, based on the volume of fluid method(VOF | - |
| dc.description.abstract | Hirt and Nichols,1981). The results of the wave profile due to the impermeable and permeable submerged breakwater agree with experimental results of Kawasaki(1997) and Kioka(1992). Very strong nonlinear waves is occurred on the crown of the impermeable submerged breakwater and wave crest is separated after breaking. Also, return flow to incident wave direction is generated after the breaking point. Vortices are formed behind submerged breakwater, and large vorticity is occurred in the breaking point. | - |
| dc.description.tableofcontents | 목차 ABSTRACT = i 要約 = ii 目次 = iii NOMENCLATURE = vi LIST OF FIGURES = viii 第1章. 序論 = 1 1.1 本 硏究의 背景 = 1 1.2 旣存의 硏究 = 2 1.3 本 硏究의 目的 = 3 1.4 本 硏究의 構成 = 3 第2章. 不透過潛堤의 解析 = 5 2.1 數値解析理論 = 5 2.1.1 基礎方程式 = 5 2.1.2 數値計算의 흐름 = 7 2.1.3 格子設定과 셀 內에서의 變數位置決定 = 8 2.1.4 基礎方程式의 離散化 = 10 2.1.5 SOLA SCHEME = 15 2.2 VOF 法에 의한 自由表面의 追跡 = 17 2.2.1 自由表面의 數値計算을 위한 모델 = 17 (1) 좌표계에 의한 방법 = 17 (2) 유체면 위치의 추적모델을 이용하는 방법 = 18 2.2.2 VOF 函數의 誘導 = 18 2.2.3 VOF 函數에 의한 셀의 決定 = 20 2.2.3.1 自由表面의 方向 決定 = 21 (1) 기울기에 의한 방법 = 21 (2) VOF 함수값에 의한 방법 = 23 2.2.3.2 셀의 分類 例外 = 24 2.2.4 VOF 函數의 數値計算 = 25 2.3 境界條件 = 29 2.3.1 自由表面에서의 境界條件 = 29 (1) 流速 境界條件 = 29 (2) 壓力 境界條件 = 30 2.3.2 開境界條件 = 31 2.3.3 그 外의 境界條件 = 33 2.4 造波條件 = 33 2.5 安定條件 = 35 2.6 解析結果 = 37 2.6.1 數値모델링의 檢證 = 37 2.6.1.1 造波波形檢證 = 37 2.6.1.2 實驗結果와의 波形比較 = 40 2.6.2 不透過潛堤의 幾何形狀에 따른 碎波位置 = 42 2.6.3 潛堤周邊의 非線型波浪변형 特性 = 43 2.6.4 潛堤周邊의 流體粒子速度場 = 46 2.6.5 空間波高變化와 平均水位變化 = 56 2.6.6 直立壁에 作用하는 水平波力 및 波壓分布 = 60 第3章. 透過潛堤의 解析 = 62 3.1 數値解析理論 = 62 3.1.1 基礎方程式 = 62 (1) 體積空隙率과 面積空隙率의 定義 = 64 (2) 體積抵抗 = 65 3.1.2 數値計算方法 = 68 3.2 解析結果 = 69 3.2.1 數値모델링의 檢證 = 69 3.2.2 潛堤周邊의 流體粒子速度場 = 71 3.2.3 空間水面變動 = 80 3.2.4 空間波高變化와 平均水位變化 = 82 3.2.5 透過潛堤內部의 流體粒子速度 = 84 第4章. 結論 = 86 4.1 不透過潛堤 = 86 4.2 透過潛堤 = 86 <參考文獻> = 88 | - |
| dc.publisher | 한국해양대학교 | - |
| dc.title | VOF法에 의한 不透過性潛食 및 透過性潛食 周邊波動場의 碎波를 包含한 full nonlinear 解析에 관한연구 | - |
| dc.title.alternative | Full Nonlinear Analysis of Wave Fields Due to the Impermeable Submerged Breakwater and the Permeable Submerged Breakwater based on VOF Method | - |
| dc.type | Thesis | - |
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