Abstract

For a system with multiple vessels which have a free liquid surface and are connected with inverted U-shaped piping, it is important to establish a highly accurate technique of evaluating the sloshing behavior that occurs in the multiple liquid surface system when an earthquake strikes. In the present study, a series of vibration tests were conducted to clarify the basic characteristics of sloshing using parameters such as the in-vessel structure, multi-surface connection, in-vessel flow, and so forth. For testing, a 1 8 scale model of the top entry loop type FBR primary loop was used. Further, the applicability of the analytical code was evaluated, and the code was found to estimate the mode shape and natural frequency of sloshing with high accuracy.

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