In this paper, liquid sloshing in the three-dimensional rigid rectangular container has been investigated. The effects of a rigid baffle placed on the free surface of the liquid have been analyzed on sloshing frequencies. The tank is partially filled with an ideal and incompressible fluid and the motion of the fluid is irrotational. Linear water wave theory is used to formulate the boundary value problem (BVP). The analytical solution of BVP is obtained in terms of velocity potential with unknown frequency. Mode shapes of the liquid domain and rigid baffle are reported using ANSYS software.
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Kumar et al. (2022) studied this question.