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基于GN模型的孤立波碰撞数值模拟

DOI: doi:10.3969/j.issn.1006-7043.2011.02.001

Keywords: GN模型, 全非线性, Boussinesq模型, 孤立波, 碰撞

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Abstract:

为验证GN模型在模拟非线性波相互作用方面的性能,对2个孤立波迎面碰撞问题进行数值模拟.对Demirbilek和Webster提出的GN模型的算法进行改进,提高了计算效率.考察了使用2种不同造波边界条件对孤立波数值模拟的影响.使用Level II浅水GN波浪模型对2个孤立波的迎面碰撞问题进行数值模拟.GN模型给出了碰撞过程中8个不同时刻的波形图,数值计算结果与他人的试验结果吻合很好.结果表明GN模型能够非常准确地模拟2个孤立波的整个迎面碰撞过程.

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