New Measurements of Bores, Solitons, and Hydraulic Jumps in Towed Topography*

We revisit the seminal experiment of wave generation by flow over topography (Lee, Yates and Wu, 1989, Lee, 1985), whereby a shallow, steady current over a localized bottom bump can act as a periodic source of upstream running long waves. We explore new parametric regimes in the two-parameter space of incoming stream velocity (Froude number) and topography amplitude (ratio of bump height and undisturbed fluid depth) in our 27m wave tank with towed topography, and compare our data with numerical simulations and theoretical predictions.