Abstract
An analytical method is developed for solving the fluid-structure interactions (FSI) associated with hydraulic transients in the BWR pressure suppression pool during a hypothetical loss-of-coolant accident. The present method assumes inviscid and infinitesimal motion of pool water for which the governing fluid-dynamic equation reduces to a linear wave equation with inhomogeneous boundary conditions of flexible pool boundaries. The present method is applied to quantitative evaluation of the FSI effect on test data obtained from a large scale pressure suppression test which was performed to investigate the pressure oscillations in the pool induced by unstationary steam condensation.
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