Numerical Study of Two-Dimensional Focusing Waves  

作　　者：李金宣 柳淑学 洪起庸 

机构地区：[1]State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology [2]Maritime and Ocean Engineering Research Institute

出　　处：《China Ocean Engineering》2008年第2期253-266,共14页中国海洋工程（英文版）

基　　金：This research was respectively supported by the National Natural Science Foundation of China(Grant No.50379002);Programfor New Century Excellent Talents in University(NCET-05-0282);the Korea ResearchCouncil of Public Science and Technology(Principal R&D Program)

摘　　要：Two-dimensional focusing waves are generated and investigated by numerical method. The numerical model is developed by introducing the wave maker boundary on the high-order spectral （HOS） method proposed by Dommermuth and Yue in 1987 and verified by theoretical and experimental data. Some cases of focusing waves considering different parameters such as assumed focusing amplitudes, frequency bandwidth, central frequency and frequency spectrum are generated. Characteristics of the focusing wave including surface elevations, the maximum crest, shift of focusing points and frequency spectra are discussed. The results show that the focusing wave characteristics are strongly affected by focusing amplitudes, frequency bandwidth, central frequency and frequency spectrum.Two-dimensional focusing waves are generated and investigated by numerical method. The numerical model is developed by introducing the wave maker boundary on the high-order spectral （HOS） method proposed by Dommermuth and Yue in 1987 and verified by theoretical and experimental data. Some cases of focusing waves considering different parameters such as assumed focusing amplitudes, frequency bandwidth, central frequency and frequency spectrum are generated. Characteristics of the focusing wave including surface elevations, the maximum crest, shift of focusing points and frequency spectra are discussed. The results show that the focusing wave characteristics are strongly affected by focusing amplitudes, frequency bandwidth, central frequency and frequency spectrum.

关 键 词：high-order spectral method focusing wave monerical method 

分 类 号：TV139.2[水利工程—水力学及河流动力学]