Modelling the tide

A team of engineers from Cardiff University aim to accurately predict the impact of using the world's second highest tidal range as a source of energy.

To do so, the researchers at the university's hydro-environmental research centre have designed and built Wales’ first physical model of the Severn estuary. Funded by the Welsh Assembly Government’s Welsh European Funding Office (WEFO), it will be used to more accurately study the impact of proposed Severn tidal power projects, including a barrage and other forms of tidal renewable energy.

The 6m x 4m model is designed to resemble as closely as possible all the unique characteristics of the estuary which stretches from west of Carmarthen Bay (near Tenby) to Gloucester.

Built in collaboration with engineers from Swansea University, the model features a computer controlled oscillating weir, which is used to generate tides of varying amplitude and period.  It has a removable model barrage that allows conditions before and after the construction of the barrage to be simulated. It also allows for the impact of other tidal energy devices, including tidal lagoon and tidal stream turbines, to be examined.