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Numerical investigation of modal and fatigue performance of a horizontal axis tidal current turbine using fluid-structure interaction

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Journal of Ocean Engineering and Science 2019年第4期4卷 328-337页

作者： Habib Ullah Muzamil Hussain Naseem Abbas Hassaan Ahmad Mohammed Amer Muhammad Noman Faculty of Engineering and Technology University of LahoreLahore 54000Pakistan Department of Mechanical Engineering NFC Institute of Engineering and TechnologyMultan 60000Pakistan School of Mechanical Engineering Chung-Ang UniversitySeoul 06974Republic of Korea Department of Mechanical Engineering National Chiao Tung UniversityHsinchuTaiwan

The tidal power has the potential to play a vital role in a sustainable energy *** main objective of this paper is to investigate the performance and fatigue life of tidal current turbine(TCT)using fluid structure interaction(FSI)*** performance of TCT was predicted using Ansys *** performance curve,pressure distribution on the blade,and velocity streamline were visualized for eight repetitive analyses at different tip speed *** hydrodynamic load calculated from CFD analysis was transferred to FEA model for investigation of the structural response of *** analysis was performed to examine the mode shapes and natural frequencies of *** fatigue analysis were performed and number of cycles and safety factor at different equivalent alternating stresses were *** results of the simulation confirm that the turbine has a maximum value of the coefficient of performance atλ=5,the turbine operating frequency is not close to its natural frequency,and it is safe under the applied fatigue loads with a high factor of safety.

关键词： tidal current turbine Fluid-structure interaction Fatigue performance Computational Fluid Dynamic Blade element

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Lattice Boltzmann simulations for multiple tidal turbines using actuator line model

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Journal of Hydrodynamics 2022年第3期34卷 372-381页

作者： Seiya Watanabe Changhong Hu Research Institute for Applied Mechanics Kyushu UniversityFukuokaJapan

In numerical simulations of tidal current farms,large-scale computational fluid dynamic(CFD)simulations with a high-resolution grid are required to calculate the interactions between tidal *** this study,we develop a numerical simulation method for tidal current turbines using the lattice Boltzmann method(LBM),which is suitable for large-scale CFD *** turbines are modeled by using the actuator line(ACL)model,which represents each blade as a group of actuator points in a *** order to validate our LBM-ACL model,we perform simulations for two interacting tidal turbines,and results of turbine performance are compared with a water tank *** proposed model successfully reproduces the variation of the torque due to wave effects and mean turbine *** have demonstrated a large-scale simulation for ten tidal turbines using 8.55×10^(8) grid points and 16 GPUs of Tesla P100 and the simulation has been completed within 9 hours with the LBM performance of 392 MLUPS per GPU.

关键词： tidal current turbine lattice Boltzmann method(LBM) actuator line model numerical water tank multi-turbine interaction

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