Abstract

Sloshing suppression effects of vertical baffle plates installed inside a cylindrical tank are tested through computational fluid dynamics. Frequency responses and seismic responses by 2003 Off-shore Tokachi Earthquake are simulated about two distribution patterns, plates stuck out on the side wall and that interrupting the free surface. Frequency responses show both patterns increase the damping and free surface plates reduce the participation factor. Free surface plates have an advantage over side wall plates and reduce the maximum seismic response by about the half of the original, factors of which are explained by modal parameters obtained by the frequency response.

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