碩士 / 國立中興大學 / 土木工程學系所 / 100 / The purpose of this paper is to investigate numerically the wave and flow characteristics of solitary wave on the new type breakwater with wave chamber, including wave pressure, reflection, turbulent energy and dissipation and characteristics of impulsive force. A computational fluid dynamic model, Flow-3D, was applied to the numerical simulation based on the three-dimensional RANS equation associated with the RNG turbulent model.
The numerical results of wave profiles and solitary wave force variations were verified with the experimental data by Synolakis (1986) and Fenton & Rienecker (1982), and the results was compared with the previous experimental results as well. Solitary wave energy would not decay when it propagated. When solitary wave passes through the wave chamber, the vortex generate at perforated wall. The vortex strength alters with the ratio of wave height and water depth. And the total turbulent kinetic energy (TKE) and dissipation of turbulent kinetic energy (DTKE) were generated. TKE and DTKE values increase and have its maximum value as the wave passed the upper sloping-slit. Then they are reduced during the wave passed out the wave chamber. The numerical simulations show the obvious reduction of the wave reflection and the wave pressure by the wave chamber. The results indicated that the wave reflection from the wave chamber between 0.6~0.8. Impulse force generated when solitary wave impulse on breakwater, H/h=0.4~0.78. The breakwater with chamber can reduce wave force effectively than traditional vertical breakwater.
| Identifer | oai:union.ndltd.org:TW/100NCHU5015078 |
| Date | January 2012 |
| Creators | Pao-Hui Wang, 王寶慧 |
| Contributors | 蔡清標 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 66 |
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