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Numerical Study on Effect of Waving Bed on the Surface Wave

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Abstract

The effect of the waving bed on the surface wave was investigated. The wave equation was reduced from the potential flow theory with the perturbation technique, and then was solved by using the pseudo-spectral method. The waterfall of the surface wave was simulated with the Matlab. It is shown that for the waving bed, an additional harmonic wave appears on the surface together with the solitary wave existing for the non-waving bed, and two kinds of waves do not interfere with each other. With the development of time, the waveform for the waving bed is kept invariable, and just the amplitude is reduced gradually. Wave-breaking phenomenon for the non-waving bed does not appear, so the waving bed seems useful to prevent the breaking of the wave.

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Correspondence to Zheng-ren Wu.

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Project supported by the National Nature Science Foundation of China (Grant No: 10272044), Research Fund for the Doctoral Program of Higher Education of China (Grant No: 20040079004) and the China Postdoctoral Science Foundation.

Biography: WU Zheng-ren (1973-), Male, Ph. D. Student

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Wu, Zr., Cheng, Yl. & Wang, Sl. Numerical Study on Effect of Waving Bed on the Surface Wave. J Hydrodyn 18, 464–468 (2006). https://doi.org/10.1016/S1001-6058(06)60121-2

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  • DOI: https://doi.org/10.1016/S1001-6058(06)60121-2

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