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An analytical approximation of focusing-wave-induced load on a semi-submerged cylinder

Acta Oceanologica Sinica 2018年第7期37卷 85-104页

作者： HU Zhe ZHANG Xiaoying LI Yan LI Xiaowen Key Laboratory of Fujian Province for Ships and Ocean Engineering Jimei University School of Marine Engineering Jimei University

Owing to the complexity of the physical mechanisms of rouge waves,the theoretical study of the rogue-wavestructure interaction problems still makes little ***,for regular-shaped structures,it is possible to give a theoretical analysis,if a relatively simple model of the rogue waves is *** wave load,induced by a focusing wave which is known as an intuitive basic model of the rouge waves,upon a semi-submerged cylinder is studied *** focusing wave is approximate by the Gauss envelope wave,an ideal model which contains most features of the rogue *** diffraction velocity potential is derived through the separation of flow field,and the formulas of the horizontal force and bending moment are *** derived formulas are simplified appropriately,and validated through comparison against numerical *** addition,the influence of parameters,such as the focusing degree,the submerging depth and the wave focusing position,is thoroughly investigated.

关键词： focusing wave Gauss envelope semi-submerged cylinder potential theory analytical solution

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Numerical Study of Two-Dimensional focusing waves

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China Ocean Engineering 2008年第2期22卷 253-266页

作者：李金宣柳淑学洪起庸 State Key Laboratory of Coastal and Offshore Engineering Dalian University of Technology Maritime and Ocean Engineering Research Institute

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

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