Two-Way Fluid–Solid Interaction Analysis for a Horizontal Axis Marine Current Turbine with LES

• Published in: Water (Basel) Vol. 12; no. 1; p. 98
• Main Authors: Gu, Jintong, Cai, Fulin, Müller, Norbert, Zhang, Yuquan, Chen, Huixiang
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.01.2020
• Subjects: Analysis; Cavitation; Computational fluid dynamics; Computer software industry; Eddy currents; Fluid dynamics; Fluid flow; Hydrodynamics; Large eddy simulation; Load fluctuation; marine current turbine; Marine environment; Mathematical models; Methods; Reynolds number; Rotor blades; Rotor blades (turbomachinery); Simulation; Simulation methods; stress; Survivability; Turbines; Turbulence models; two-way fluid–solid interaction; Velocity; Vibration; Viscosity; vortex; Vortices; Iran; United States
• ISSN: 2073-4441; 2073-4441
• DOI: 10.3390/w12010098

Operating in the harsh marine environment, fluctuating loads due to the surrounding turbulence are important for fatigue analysis of marine current turbines (MCTs). The large eddy simulation (LES) method was implemented to analyze the two-way fluid–solid interaction (FSI) for an MCT. The objective was to afford insights into the hydrodynamics near the rotor and in the wake, the deformation of rotor blades, and the interaction between the solid and fluid field. The numerical fluid simulation results showed good agreement with the experimental data and the influence of the support on the power coefficient and blade vibration. The impact of the blade displacement on the MCT performance was quantitatively analyzed. Besides the root, the highest stress was located near the middle of the blade. The findings can inform the design of MCTs for enhancing robustness and survivability.