Structural oscillation control using tuned liquid damper

This paper presents a numerical study for structural control using a tuned liquid damper (TLD), which consists of solid tank filled with liquid. In order to determine the complete behavior, it is necessary to investigate the phenomenon coupling with structure and fluid. In the fluid analysis, the Navier-Stokes equation is used in the form of the arbitrary Lagrangian-Eulerian (ALE) formulation. For the discretization of the incompressible Navier-Stokes equation, the improved-balancing-tensor-diffusivity method and the fractional-step method are used. For computational stability, smoothing on the free surface is carried out. In the structural analysis, the Newmark's beta method is used for the time discretization. It is shown that the method presented in this paper is suitable for the analysis and the tuned liquid damper is efficient in reducing the oscillation. (C) 1999 Elsevier Science Ltd. All rights reserved.