Oral Presentation

¹Abdelrahman Omar Omar ; ²Eehab Khalil; ¹Mohamed Abdelshakor Hasan

¹Construction and Building Dep., Engineering and Technology, Arab Academy for Science, Technology, and Maritime Transport

²National water research center

The control of wind-induced vibrations in structures is a widely researched area, particularly focusing on passive methods. One of such passive control technique is the tuned liquid damper (TLD). In this study, the TLD was employed to alleviate wind-induced vibrations of a 5MW wind turbine (WT). A numerical model was developed using ANSYS to analyze the performance of the TLD in conjunction with the WT. The validity of the ANSYS numerical model was confirmed through an experimental investigation. A transient analysis was conducted to analyze the structural response, while the fluent module was utilized to capture the liquid behaviour. The system coupling module facilitated the simultaneous interaction between these two analysis modules, enabling the transfer of liquid sloshing data to the primary structure for damping purposes. The study findings demonstrated the effectiveness of using the TLD in adequately mitigating low-frequency displacements. Furthermore, TLD showed potential for enhancing the motion reduction. Specifically, the study revealed that utilizing the TLD with a mass ratio of 4% resulted in a 7.32% reduction in WT vibration.

Tuned liquid damper; Sustainability; vibration control

Structural and Construction Engineering