In this paper, the effect of the time step size on the numerical results of the liquid sloshing problem was studied for a laterally moving three-dimensional (3D) rectangular tank in a battery cell. The commercial software "Fluent" has been used to predict the local flow characteristics in the tank. To simulate 3D incompressible viscous two phase flow in a tank, partially filled with liquid, the volume of fluid (VOF) method based on the finite volume method has been considered. The comparison between numerical and experimental results confirms the validity of the numerical method.
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