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Indexed by:期刊论文

Date of Publication:2008-06-01

Journal:CHINA OCEAN ENGINEERING

Included Journals:SCIE、EI、ISTIC、CSCD

Volume:22

Issue:2

Page Number:253-266

ISSN No.:0890-5487

Key Words:high-order spectral method; focusing wave; numerical method

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.