Velocity Measurements of the Flow over a Gate-Controlled Weir Structure

TL;DRAbstract

The South Florida Water Management District (SFWMD) uses G304 control structures to manage flow into and out of a large storm-water treatment area (STA). These structures consist of a lateral unsuppressed weir, a sluice gate and a corrugated culvert for flow control and transfer through an embankment. For better flow control in the STAs, it is imperative to accurately measure the discharge through the G304 control structures and to determine the approach velocity over the weir for different field scenarios. Flow behavior of the G304 structure was examined in a prototype during two days of testing for two canal headwater elevations. The complexity of the inflow over the weir and the difficulty and cost of varying flow in the field made it desirable to use a model to further investigate the structure. Thus, a 1:6.26 Froude-based physical model was used to simulate additional flow conditions over the weir. Large-Scale Particle Tracking Velocimetry (LPTV) was used to determine surface velo

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