| Numerical Simulation of Freak Waves Based on the Four-Order Nonlinear Schrdinger Equation |
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| 引用本文： | 张运秋,张宁川,裴玉国.Numerical Simulation of Freak Waves Based on the Four-Order Nonlinear Schrdinger Equation[J].中国海洋工程,2007(2). |
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| 作者姓名： | 张运秋 张宁川 裴玉国 |
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| 作者单位： | State Key Laboratory of Coastal and Offshore Engineering Dalian University of Technology，State Key Laboratory of Coastal and Offshore Engineering，Dalian University of Technology，State Key Laboratory of Coastal and Offshore Engineering，Dalian University of Technology，Dalian 116024 China，Dalian 116024 China，Dalian 116024 China |
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| 摘 要： | A numerical wave model based on the modified four-order nonlinear Schrdinger (NLS) equation in deep water is developed to simulate freak waves. A standard split-step, pseudo-spectral method is used to solve NLS equation. The validation of the model is firstly verified, and then the simulation of freak waves is performed by changing sideband conditions. Results show that freak waves entirely consistent with the definition in the evolution of wave trains are obtained. The possible occurrence mechanism of freak waves is discussed and the relevant characteristics are also analyzed.
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