University of Missouri Research Reactor (MURR) LEU Fuel Fluid-Structure Interaction Analysis

Abstract

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National Bureau of Standards Reactor LEU Fuel Element Flow Test Conceptual Design

“…A similar pressure differential curve for the most limiting plate 23 in the MURR LEU element was extracted from the FSI analysis conducted in a separate activity for the MURR full LEU element described in [50]. This curve, together with pressure differentials for plates 5 and 9 in the analyzed NBSR element, is shown in Figure 3.14 presents the pressure as a function of normalized distance from the trailing edge of the plate.…”

“…Also, the peak on the leading edge may be more or less pronounced depending on the upstream flow conditions. This behavior is common for both flat and curved plates [31,50,51,52]. If the leading edge is not constrained, this type of pressure differential typically causes the maximum displacement to be located at the leading edge.…”

“…The FSI analysis of the NBSR LEU fuel element will be performed in the future, along with the preliminary stage of the NBSR LEU flow test design. Recently, an FSI analysis of the MURR LEU fuel element has been performed [50], and its results are used here as a reference to help in estimating the magnitude of the deformations of the plates in the NBSR LEU element. The character and the magnitude of the deflection of a curved plate in a fuel element depends not only on the load but also on the boundary conditions.…”