[A-OS14] Physical Oceanography (General)

[AOS14-P14] Study on the motion characteristics of floating structure with Tuned Liquid Multiple Column Dampers(TLMCD).

*BoJun Wang¹, WenKai Weng¹, TaWei Lin¹ (1.National Taiwan Ocean University)

Keywords:Tuned Liquid Multiplied Column Damper(TLMCD), floating breakwater, motion, damping

The main purpose of this study is to investigation motion characteristics on the floating structure with Tuned Liquid Multiplied Column Damper (TLMCD).When waves acted on the structure, the flow in the TLMCD system will generate inertia resistance to stabilize the floating structure. It is applied to floating structure, it have a lot of advantages such as easy installation, low costs, and easy frequency adjustment. With fixed floating structure, the ratio of the mass of TLCD to the total mass is too low to suppress vibration. By increasing vertical pipes in the TLCD(i.e.,TLMCD), it achieves a higher mass ratio and superior vibration damping.In this study, intends to conduct hydraulic model experiments on the floating breakwater with TLMCD, considering the wave effect to the floating breakwater, and discuss the motion on the floating structure with TLMCD. The experiment was carried out in a basin to verify the result obtained from numerical modeling and analyze the nonlinear effect on the structure, and be used as a reference for engineering applications. This study focuses on the impact of different TLMCD design parameters on floating structures. It showed that increasing the number of vertical tubes significantly reduced pitch motion. When the diameter of the column increased, the pitch motion also increased. The water level in the tube increased, the pitch motion decreased and the frequency of pitch motion also decreased. Among the TLMCD study results, floating structure with TLMCD can significantly reduced its motion ,especially ptich motion.