Abstract
Tuned liquid column damper (TLCD) is a kind of passive damper that use water sloshing motion to control structural vibration in tall buildings, wind turbines and ships. This paper presents finite element analysis of sloshing in 2D water tank using a pressure based Eulerian approach. The fluid domain is discretised by an isoparametric quadrilateral finite element. The cavity was modelled with rigid contours and free surface in order to study the decoupled liquid reservoir. Next, the cavity was coupled to a flexible structure with free vibration and forced vibration. The numerical results obtained by the created program were validated using experimental results [1] presenting acceptable errors with less than 5k elements.
Highlights
Tuned liquid column damper (TLCD) is a kind of passive damper device that use de water sloshing motion to control structural vibration in tall buildings, wind turbines and ships [2]
This paper presents finite element analysis of sloshing in 2D water tank using a pressure based Eulerian approach
The fluid domain is discretised by isoparametric quadrilateral finite elements
Summary
Tuned liquid column damper (TLCD) is a kind of passive damper device that use de water sloshing motion to control structural vibration in tall buildings, wind turbines and ships [2]. The principle of a passive control device (secondary system) is to reduce the dynamic response of a structure (primary system) when its natural frequency is tuned very close to the dominate mode of primary system. In most of bibliography reference, TLCD is modelled as a reduced 1DoF non-linear (or stochastically linearized) differential equation. Lagrangian, Eulerian and mixed Eulerian-Lagrangian descriptions are used to modelling 2D/3D sloshing problems [9]. An Eulerian description [10] is an easy way to study sloshing and fluid-structure problems implemented in most of commercial platforms
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