Abstract
Parametric studies on the optimization of baffles on vibration suppression of partially filled tanks coupled by structure have been widely conducted in literature. However, few studies focus on the effect of the position of the baffles on fluid flow stratification and dampening the motion. In the present study, a numerical investigation, an engineering analysis, and optimal design study were performed to determine the effect of external flow on circular obstacle baffles performance on suppressing the vibrations of coupled structure in a closed basin. The single degree of freedom model (mass–spring–damper) is used to model the structure that holds the tank. The coupled system is released from an initial displacement without a velocity. The governing mass, turbulent Navier–Stokes momentum, volume of fluid, and one degree of freedom structure equations are solved by the Pressure-Implicit with Splitting of Operators algorithm in fluids and Newmark method in structure. Based on a detailed study of transient structure motion coupled with sloshing dynamics, the optimal baffle location was achieved. Optimal position of the baffle and its width are systematically obtained with reference to the quiescent free surface.
Highlights
The effect of fluid–solid interaction has been studied in recent years [1,2,3,4,5,6]
The aim of the current study is to investigate the effect of the presence of pipe shaped baffles in the tank on the fluid flow around it and the effect of different immersing of the baffles as well as the liquid fill levels on the free surface profiles and vibration mitigating behavior of fluid sloshing on coupled motion
A parameter study on the optimization of baffle on vibration suppression of a partially filled rectangular rigid tank coupled by structure has been performed
Summary
The effect of fluid–solid interaction has been studied in recent years [1,2,3,4,5,6]. One of the passive solutions to this problem is Baffle structures [33]. They are extremely powerful in moderating solid shaking of fluid when the tank is affected by a sudden outside power. NASA [23] was one of the first to research the steadiness of a sloshing under parametric excitation utilizing trial and hypothetical means. As per this hypothesis, specific modes will be energized for a particular blend of abundancy and recurrence as anticipated by the soundness outline
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