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INVESTIGATION OF SLOSHING RESPONSE IN RECTANGULAR CONTAINER WITH FLEXIBLE BAFFLE
BANG FUH CHEN, BING HAN LIN

Last modified: 2018-06-04

Abstract


The commercial software ANSYS was used to simulate the sloshing response of liquid in the rectangularcontainer with bottom-mounted flexible baffle. To connect the numerical data between the fluid domain andstructural domain, the two-way FSI simulation is implemented. The free surface elevation and the sloshingfrequency with flexible baffle are compared with the results of tank with rigid baffle. Through the numericalexperiments performed by varying the height and thickness of the baffle, the hydrodynamic characteristics underhorizontal excitation are parametrically investigated. Figure 1 shows an example of the sloshing displacement atleft wall of the tank with various thicknesses of baffle. The baffle height is 0.5 d0, the exciting frequency is 1.1ω1, and exciting amplitude is a0 / L = 0.001, L is the tank width and the Young’s modulus of the baffle is1.51*106. According to the results of the present investigations, the sloshing response is significantly affected bythe size and location of the flexible baffle. In addition, the shift of the resonant frequency of the sloshing tankwith flexible baffle is studied and the effects of flexible baffle on sloshing displacement reduction areinvestigated.Figure 1 (a) The sloshing displacement at left wall of the tank with variuos thickness of baffle; baffle height = 0.5 d0. ω1 isthe fundamental frequency of the tank without baffle. (b) The response spectrum of sloshing displacements at left wall ofthe tank.

Keywords


Fluid-Structure Interaction; sloshing tank; flexible baffle

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