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Numerical study of two-dimensional focusing waves
- Authors
- Jin-Xuan, Li; Shu-xue, Liu; Hong, Keyyong
- Issue Date
- 2008
- Publisher
- CHINA OCEAN PRESS
- Keywords
- high-order spectral method; focusing wave; numerical method
- Citation
- CHINA OCEAN ENGINEERING, v.22, no.2, pp 253 - 266
- Pages
- 14
- Journal Title
- CHINA OCEAN ENGINEERING
- Volume
- 22
- Number
- 2
- Start Page
- 253
- End Page
- 266
- ISSN
- 0890-5487
2191-8945
- Abstract
- 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.
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