Generation of two-dimensional water waves by moving bottom disturbances
Abstract
We investigate the potential and limitations of the wave generation by disturbances moving at the bottom. More precisely, we assume that the wavemaker is composed of an underwater object of a given shape which can be displaced according to a prescribed trajectory. We address the practical question of computing the wavemaker shape and trajectory generating a wave with prescribed characteristics. For the sake of simplicity we model the hydrodynamics by a generalized forced Benjamin-Bona-Mahony (BBM) equation. This practical problem is reformulated as a constrained nonlinear optimization problem. Additional constraints are imposed in order to fulfill various practical design requirements. Finally, we present some numerical results in order to demonstrate the feasibility and performance of the proposed methodology.
Domains
Fluid mechanics [physics.class-ph] Fluids mechanics [physics.class-ph] Modeling and Simulation Classical Physics [physics.class-ph] Exactly Solvable and Integrable Systems [nlin.SI] Pattern Formation and Solitons [nlin.PS] Numerical Analysis [math.NA] Analysis of PDEs [math.AP] Fluid Dynamics [physics.flu-dyn] Computational Physics [physics.comp-ph] Atmospheric and Oceanic Physics [physics.ao-ph] Ocean, Atmosphere Geophysics [physics.geo-ph] Geophysics [physics.geo-ph] Global Changes Optimization and Control [math.OC]Origin | Files produced by the author(s) |
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