State-of-the-art review and future trends of development of tidal current energy converters in China

Si, Yulin; Liu, Xiaodong; Wang, Tao; Feng, Bo; Qian, Peng; Ma, Yong; Zhang, Dahai

doi:10.1016/j.rser.2022.112720

Cited by 23 publications

(1 citation statement)

References 69 publications

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“…In addition to tidal stream energy convertors, tidal barrages and lagoons can also generate energy from tidal rise and fall by taking advantage of the height difference between low and high tides [36,37,38]. Tidal barrages and lagoons have a dam, (i.e.…”

Section: Tidal Stream Energy Convertersmentioning

confidence: 99%

Transient BEMT models and validation through a sea trial turbine platform

Evans

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Tidal stream turbines (TSTs) have the potential to contribute significantly to the UK energy needs. Currently, the sector is still in a primitive stage and has a relatively high levelised cost of energy compared to other renewable energy sources. A reduction in their cost can be made by improving their design through numerical modelling and physical testing. This thesis will firstly present the classical blade element momentum theory (BEMT) numerical model which is enhanced with additional features (1. foil shape and Reynolds number dependence, and 2. transient turbulence and wave flow fields), which are incorporated to improve the predictions of loads and performance of TSTs. The improvements to the BEMT numerical model are quantified and validated by comparingto empirical data from laboratory testing of five different TSTs (Magallanes ATIR, Sabella D12, IFREMER, Oxford, and Barltrop). This inclusion of the foil shape and Reynolds number dependence in the numerical model has improved the prediction of rotor loads by up to 20%, whilst the inclusion of transient turbulence and wave flow fields has allowed for simulation of TSTs in flow conditions that were not previously possible. Secondly, the thesis presents the design and testing of a 3.0m diameter TST, named remote river energy system (RRES). The BEMT numerical model was used to predict the loads on the turbine which governed its design. A laboratory test rig was built to test the power take-off and pump assemblies prior to deployment at Warrior Way, Pembrokeshire. Valuable knowledge was gained throughout the design and testing stages of the RRES which will improve future developments of TSTs. The improvements made to the BEMT numerical model and testing of the RRES will help lower the levelised cost of energy and increase the attractiveness of TSTs as generators of clean renewable energy.

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Section: Tidal Stream Energy Convertersmentioning

confidence: 99%