A Fifth-Order Nonlinear Schrödinger Equation for Waves on the Surface of Finite-Depth Fluid


  • Yu.V. Sedletsky Institute of Physics, Nat. Acad. of Sci. of Ukraine




nonlinear Schr¨odinger equation, fifth-order nonlinearity, finite-depth fluid


We derive a high-order nonlinear Schr¨odinger equation with fifth-order nonlinearity for the envelope of waves on the surface of a finite-depth irrotational, inviscid, and incompressible fluid over the flat bottom. This equation includes the fourth-order dispersion, cubic-quintic nonlinearity, and cubic nonlinear dispersion effects. The coefficients of this equation are given as functions of one dimensionless parameter kℎ, where k is the carrier wave number, and ℎ is the undisturbed fluid depth. These coefficients stay bounded in the infinite-depth limit.


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How to Cite

Sedletsky, Y. (2021). A Fifth-Order Nonlinear Schrödinger Equation for Waves on the Surface of Finite-Depth Fluid. Ukrainian Journal of Physics, 66(1), 41. https://doi.org/10.15407/ujpe66.1.41



General physics