Floating Wave Amplifier regular-wave basin experiment: wave-field, structural-motion, nonlinear phase-coupling, and WAMIT validation data

This dataset supports an experimental investigation of a V-shaped Floating Wave Amplifier composed of two submerged flexible circular fabric beams. The experiments were conducted in the O.H. Hinsdale Large Wave Basin at Oregon State University. Synchronized resistive wave-gauge and Qualisys optical-motion measurements characterize the incident-wave proxy, local free-surface motion, whole-beam motion, and residual structural deformation over a regular-wave campaign spanning water depths of 0.50?1.00 m, commanded wave periods of 0.80-2.00 s, and incident headings of 0-20 degrees.

The deposit includes native instrument records, processed Qualisys and wave-gauge MATLAB files, case metadata, completed experimental?simulation validation objects, publicly redistributable WAMIT inputs and derived first-order outputs, analysis code, figure-source tables, and reproducibility manifests. The associated paper uses 56 retained regular-wave cases and 319 valid case-field observations to evaluate local wave-height amplification, upwave/downwave redistribution, relative-diameter scaling, carrier-band whole-beam and deformation associations, second- and third-harmonic energy, bispectral phase coupling, and a two-body first-order WAMIT baseline.

The upstream wmwg15 gauge is treated as an incident-wave proxy rather than a direct wavemaker measurement. Early-arrival windows are provided for incident harmonic assessment so that later FWA- and basin-reflected energy is excluded as far as travel-time estimates permit. The WAMIT products are linear, first-order radiation/diffraction results and do not reproduce nonlinear superharmonics. Documentation identifies the paper subset, data hierarchy, coordinate transformations, units, variable conventions, limitations, and steps required to reproduce the reported outputs.