Hydrodynamic models and confinement effects by horizontal boundaries

Abstract

Confinement effects by rigid boundaries in the dynamics of ideal fluids are considered from the perspective of long-wave models and their parent Euler systems, with the focus on the consequences of establishing contacts of material surfaces with the confining boundaries. When contact happens, we show that the model evolution can lead to the dependent variables developing singularities in finite time. The conditions and the nature of these singularities are illustrated in several cases, progressing from a single layer homogeneous fluid with a constant pressure free surface and flat bottom, to the case of a two-fluid system contained between two horizontal rigid plates, and finally, through numerical simulations, to the full Euler stratified system. These demonstrate the qualitative and quantitative predictions of the models within a set of examples chosen to illustrate the theoretical results.

arXiv comment46 pages, 21 figures

References in corpus (5)

• Splash singularity for water waves
• On the absence of "splash" singularities in the case of two-fluid interfaces
• Breaking mechanism from a vacuum point in the defocusing nonlinear Schroedinger equation
• An inertia 'paradox' for incompressible stratified Euler fluids
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Cited by in corpus (5)

• On the long time asymptotic behavior of the modified Korteweg de Vries equation with step-like initial data
• Singularity formation as a wetting mechanism in a dispersionless water wave model
• Singularity formation for the Serre-Green-Naghdi equations and applications to abcd-Boussinesq systems
• On the Geometry of Extended Self-Similar Solutions of the Airy Shallow Water Equations
• Hamiltonian aspects of 3-layer stratified fluids