https://scholars.lib.ntu.edu.tw/handle/123456789/169458
標題: | 斜向水波作用於薄多孔介質牆之邊界層分析 | 作者: | 黃良雄 | 關鍵字: | oblique linear water wave;thin porous wall;partial-slipping boundary condition;boundary layer | 公開日期: | 2004 | 出版社: | 臺北市:國立臺灣大學土木工程學系暨研究所 | 摘要: | When an incoming water wave is parallel to a porous breakwater, there is a paradoxical phenomenon in earlier studies such as Dalrymple et al. (1991) and Sahoo et al. (2000) that by following potential flow boundary condition of normal flux continuity, the water wave permeates completely without regarding to how large the porosity of the breakwater is. To remedy the above paradoxical phenomenon, a new partial-slipping boundary condition for potential flow is proposed based on the reason similar to that in Beavers and Joseph (1967). The results show that as the water wave is parallel to a thin porous wall, the transmitted wave side remains quiescent, i.e. the transmitted wave side does not have wave energy ( 0 = t C ). This reveals that the above mentioned paradoxical phenomenon disappears in the present study. The viscous boundary layer effect is also investigated, which provides proper boundary conditions on the thin porous wall for viscous flow and gives more detailed flow information. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/2875 | 其他識別: | 922611E002029 | Rights: | 國立臺灣大學土木工程學系暨研究所 |
顯示於: | 土木工程學系 |
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922611E002029.pdf | 184.41 kB | Adobe PDF | 檢視/開啟 |
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