頁籤選單縮合
題名 | The Interaction of Water Wave and Porous Breakwater=水波與直立防波堤之交制作用 |
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作者 | 黃良雄; 謝平城; 張廣智; | 書刊名 | 力學 |
卷期 | 11:1 1995.03[民84.03] |
頁次 | 頁63-73 |
分類號 | 443.1 |
關鍵詞 | 多孔防波堤; 多孔雷諾茲數; 水波效應參數; Porous breakwater; Porous reynolds number; Wave-effect parameter; |
語文 | 英文(English) |
中文摘要 | 本文係探討一直立防波堤在一半無限長渠道中受水波作用下流場之解析。文中提 出一簡化解析法來分析防波堤厚度較薄之例,並用數值方法來分析防波堤厚度變厚時之情形 。簡化解析法主要假設為防波堤內之垂直流速剖面不變。經由數值方法計算結果發現:防波 堤厚度較薄時,簡化解析法與數值方法所得到之結果相當一致,隨著防波堤厚度變厚,二法 分析之結果才有明顯之差異。同時,本文亦推論出薄厚度防波堤之最佳消波情況。 |
英文摘要 | Water wave in a constant depth channel acting on a vertical porous breakwater seated in front of a vertical bank is studied. Both an analytical approach for thin porous breakwater and a numerical approach for porous breakwater of arbitrary thickness are presented. The analytical approach of thin porous breakwater is based on the assumption that vertical velocity profiles are identical throughout the porous breakwater. A perfect agreement of numerical approach with analytical approach is obtained for thin porous breakwater as well as the large deviation from two approaches for thick porous breakwater. The optimal choice of the porous breakwater which minimizes the reflection of water wave for thin porous breakwater is also obtained. |
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