New wave generation

Abstract

We present the results of a combined experimental and numerical study of the generation of internal waves using the novel internal wave generator design of Gostiaux et al. (2007). This mechanism, which involves a tunable source comprised of oscillating plates, has so far been used for a few fundamental studies of internal waves, but its full potential has yet to be realized. Our studies reveal that this approach is capable of producing a wide variety of two-dimensional wave fields, including plane waves, wave beams and discrete vertical modes in finite-depth stratifications. The effects of discretization by a finite number of plates, forcing amplitude and angle of propagation are investigated, and it is found that the method is remarkably efficient at generating a complete wave field despite forcing only one velocity component in a controllable manner. We furthermore find that the nature of the radiated wave field is well predicted using Fourier transforms of the spatial structure of the wave generator.

References in corpus (4)

• Reflexion and Diffraction of Internal Waves analyzed with the Hilbert Transform
• Near Critical Reflection of Internal Waves
• A novel internal waves generator
• Laboratory experiments on the generation of internal tidal beams over steep slopes

Cited by in corpus (25)

• Instabilities of Internal Gravity Wave Beams
• Experimental study of parametric subharmonic instability for internal waves
• Energy cascade in internal wave attractors
• Experimental evidence of a triadic resonance of plane inertial waves in a rotating fluid
• Non-linear fate of internal wave attractors
• Internal wave attractors examined using laboratory experiments and 3D numerical simulations
• Resonant Triad Instability in Stratified Fluids
• Soliton generation by internal tidal beams impinging on a pycnocline: laboratory experiments
• Finite-size effects in parametric subharmonic instability
• Internal wave attractors: different scenarios of instability
• Experimental observation of a strong mean flow induced by internal gravity waves
• Mixing by internal waves quantified using combined PIV/PLIF technique
• Internal Wave Attractors in 3D Geometries : trapping by oblique reflection
• Linear and nonlinear regimes of an inertial wave attractor
• Scale effects in internal wave attractors
• Internal wave boluses as coherent structures in a continuously stratified fluid
• Three-dimensionality of the triadic resonance instability of a plane inertial wave
• Internal wave pressure, velocity, and energy flux from density perturbations
• Excitation and resonant enhancement of axisymmetric internal wave modes
• Mixing and formation of layers by internal wave forcing
• Energy budget in internal wave attractors experiment
• The long view of triadic resonance instability in finite-width internal gravity wave beams
• Particle transport induced by internal wave beam streaming in lateral boundary layers
• Mean flow generation by three-dimensional non-linear internal wave beams
• Variational Mode Decomposition for estimating critical reflected internal wave in stratified fluid