Author(s): Hao Chen; Jisheng Zhang; Yakun Guo; Dawei Guan

Linked Author(s): Hao Chen

Keywords: Vertical-axis tidal turbine; Flow intensity; Water depth; Scour characteristics

Abstract: Amid the ongoing advancement of clean energy and the increasing demand for environmentally friendly power generation, vertical-axis tidal turbines have become a crucial technical choice in hydropower. This is due to their ability to adapt to complex flow environments and low-velocity water areas. Consequently, studying the scour characteristics around vertical-axis tidal turbines is essential for assessing the stability and operational safety of their foundations. In this study, physical model experiments are conducted to analyze the effects of flow intensity and water depth on the development of scour around the foundation. The impact of rotor operation on foundation erosion is also assessed by comparing the scour patterns around a monopile foundation without turbine structure. The results indicate that the maximum scour depth and the extent of scour around the foundation increase with higher flow intensity, but decrease with larger water depth. Additionally, it is found that rotor rotation significantly exacerbates scour around the foundation.

DOI: https://doi.org/10.64697/978-90-835589-7-4_41WC-P1777-cd

Year: 2025