ON SOME THEORETICAL AND NUMERICAL ASPECTS OF THE NEUMANN–KELVIN MODEL WITH CAPILLARITY IN HYDRODYNAMICS

Abstract

A discussion and an improvement of the Neumann–Kelvin's model are suggested in this paper. This model is used in the simulation of progressive wave phenomenon. As mentioned by several authors ([7, 19, 23, 29]), this model is ill posed unless a capillary energy is introduced. The mathematical explanation is that a compactness inversions' property occurs if the capillary forces are omitted. Theoretical arguments and numerical simulations are used in the following which aims at giving an explanation of what happens from a mechanical point of view.