Internal wave turbulence in a stratified fluid with and without eigenmodes of the experimental domain

Abstract

Turbulence experiments in a stratified fluid driven by a set of internal gravity waves commonly lead to a discretization of the energy in frequency and wavenumber due to the emergence of eigenmodes of the fluid domain. In this article, we present an experimental means to inhibit this process and to direct the flow towards the regime described by the weak internal-wave turbulence theory which aims at modeling the oceanic dynamics at small scales.