APWR炉内構造物中性子反射体の流体構造連成効果を考慮した耐震解析手法の研究(J13-4 流体関連振動I,J13 流体関連の騒音と振動)

概要

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A Neutron Reflector (NR) is a new structure designed for improving the structure reliability of Advanced Pressurized Water Reactors (APWR). The NR is placed in a narrow gap between the NR and a Core Barrel. In the case of a structure surrounded by liquid in a narrow gap, the added fluid mass and the damping increases compared with in the air. This effect is famous for Fluid-Structure Interaction effect (FSI effect) in the narrow gap and it depends on the vibration displacement of the structure. In this paper, results of a model test are shown comparing the data with the calculated ones based on the new analysis method, which is based on a narrow passage flow theory (Morita et al., 2001) combined with the ANSYS computer code. As a result, a new seismic analysis method using the above theory was developed. The analytical results are in good agreement with the test results.
社団法人日本機械学会の論文
2004-09-04