Dai, P.; Zhang, J., and Zheng, J., 2017. Predictions for dynamic tidal power and associated local hydrodynamic impact in the Taiwan Strait, China.

Dynamic tidal power systems are a new alternative to tidal barrage systems for extracting tidal potential energy. In these systems, a dike perpendicular to the coast is used to create a water head, which is then converted into electricity. In this study, a mathematical model was developed using Delft3D FLOW to evaluate the power output and hydrodynamic consequences of a dynamic tidal power system in the Taiwan Strait. The model is composed of a coarse-resolution subdomain and a fine-resolution subdomain, and a domain decomposition technique was adopted to simulate flow through the interfaces of these subdomains. In the simulation, the mean power reached its maximum (0.89 GW) at a dike open ratio of 8%. The power system strongly affected the M₂ tide in the local region. Overall, the amplitude of the M₂ tide increased on the NE side of the system and decreased on the SW side; specifically, at an open ratio of 8%, the amplitude increased (decreased) by 0.25 m on the NE (SW) side. The variations in the tidal system decreased with increase in the open ratio. The effect of the system on the K₁ tide was weaker than that on the M₂ tide.