碩士 / 國立臺灣海洋大學 / 河海工程學系 / 103 / This study modified the structure type of a double-row curtainwall pile-supported breakwater (CPB) to strengthen the hydrodynamic performance. At first, we changed the seaside CPB from a vertical structure to an inclined structure termed an inclined curtainwall pile-supported breakwater (inclined CPB). Second, this study referenced Kouno and Nakamura (2009) to combine a wave-absorbing chamber with the inclined CPB. The resulting structure, which was termed a water-chamber curtainwall pile-supported breakwater (water-chamber CPB), was intended to protect the port or generate electrical power through the concentration of wave energy. In this paper, the multi-domain boundary element method (MBEM) was used to investigate the hydrodynamic characteristics (including reflection, transmission, energy loss, relative run-up of second-row, dimension horizontal and vertical wave force) of the inclined and water-chamber CPB for different incident wave angles and differing relative distances between the double-row of CPBs. The accuracy and validity of the MBEM method was determined by comparing the solutions produced by it to the solutions obtained by other researchers employing different methods, and excellent agreement has been observed. The results for the inclined CPB showed that it achieved the best outcome when the seaward angle of the CPB to the sea γ1 = 80°. This study also found that the water-chamber CPB presented optimal performance at a relative submerged water depth of seaward CPB: d1/h = 0.1, γ1 = 80°, height of the water-chamber d2/h = 0.5, porous effect parameter G = 2.0, and width of the water-chamber B/h = 0.25. When the dimensionless wave number (kh) was between 0.6 and 2.0, the water-chamber CPB could generate more electric power due to the higher run-up of the second row of the CPB (R/H)2. When the dimensionless wave number was about kh > 2.5, the water surface remained steadier due to the higher energy loss (EL) caused by the water-chamber CPB. Finally, in the water-chamber CPB, the peak of reflection and energy loss was concentrated at the specific relative width B/L' (L': the wavelength of the wave above the submerged plate).
| Identifer | oai:union.ndltd.org:TW/103NTOU5192033 |
| Date | January 2015 |
| Creators | Chih-Hao Su, 蘇志昊 |
| Contributors | Yueh, Ching-Yun, 岳景雲 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 113 |
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