🌀 Two-Chamber Wave Tank: Seiche Resonance, Baffle Opening and Spectrum (2D)

Top view of a wave tank split into two chambers by a baffle with an adjustable opening, driven by a paddle at one end. Set the drive frequency, paddle speed, drag, depth and opening, and watch standing waves build at resonance. A live shallow-water solver shows the surface while an impulse spectrum and a mode-versus-opening map show where the resonances sit, with four in-page numerical checks. A wave-physics companion to the 3D resonant basin spectrometer.