Generation of weakly nonlinear turbulence of internal gravity waves in the Coriolis facility

Stably stratified square cavity subjected to horizontal oscillations: responses to small amplitude forcing

“…The question of what happens as this amplitude is increased remains open, and of current interest (e.g. Savaro et al 2020). The transition to internal wave turbulence is expected to occur at smaller forcing amplitudes as is increased as a result of higher-order resonances becoming less viscously damped (Aldridge & Toomre 1969).…”

Experiments in Surface Gravity–Capillary Wave Turbulence

“…These have indeed opened the possibility of probing in detail the spectral content of turbulent wave fields simultaneously in wavevector k and frequency ω space, as required to discriminate propagating waves from other structures with distinct dynamics. Following these developments, experiments have explored a broader range of systems beyond water waves including vibrating plates (Cobelli et al 2009b), hydroelastic waves (Deike et al 2013), inertial waves in rotating fluids (Monsalve et al 2020), and internal waves in stratified fluids (Savaro et al 2020, Davis et al 2020) (this list being far from exhaustive), not to mention the numerical simulations. It is not an exaggeration to claim that the topic of wave turbulence is blooming nowadays.…”

Energy balance and mixing between waves and eddies in stably stratified turbulence

“…Alternative approaches have been developed, for example, by selecting only a few Fourier modes , and detecting in their temporal signal the presence of frequency peaks linked to their wave vector by the dispersion relation, which is a signature of an IGW. Recent detailed analyses have been proposed to study waves in turbulence: in stratified turbulence, a global signature of an IGW was observed in experiments by Savaro et al (2020) and in numerical simulations by Di , and Maffioli, Delache & Godeferd (2020) clearly characterized the presence of an IGW by using a temporal analysis of reduced energy from Riley's decomposition.…”