Third-Order Stokes Wave Solutions of the Free Surface Capillary- Gravity Wave and the Interfacial Internal Wave

Based on the Stokes wave theory, the capillary-gravity wave and the interfacial internal wave in two-layer constant depth's fluid system are investigated. The fluids are assumed to be incompressible, inviscid and irrotational. The third-order Stokes wave solutions are given by using a perturbation m...

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Veröffentlicht in:China ocean engineering 2017-12, Vol.31 (6), p.781-787
Hauptverfasser: Meng, Rui-jun, Cui, Ji-feng, Chen, Xiao-gang, Zhang, Bao-le, Zhang, Hong-bo
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Sprache:eng
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Zusammenfassung:Based on the Stokes wave theory, the capillary-gravity wave and the interfacial internal wave in two-layer constant depth's fluid system are investigated. The fluids are assumed to be incompressible, inviscid and irrotational. The third-order Stokes wave solutions are given by using a perturbation method. The results indicate that the third-order solutions depend on the surface tension, the density and the depth of each layer. As expected, the first-order solutions are the linear theoretical results (the small amplitude wave theoretical results). The second-order and the third-order solutions describe the nonlinear modification and the nonlinear interactions. The nonlinear impact appears not only in the n (n〉~2) times' high frequency components, but also in the low frequency components. It is also noted that the wave velocity depends on the wave number, depth, wave amplitude and surface tension.
ISSN:0890-5487
2191-8945
DOI:10.1007/s13344-017-0089-z