Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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A STUDY ON MODAL CHARACTERISTICS OF FLOW SKIRT USING EFFECTIVE YOUNG'S MODULUS

  • Received : 2011.03.15
  • Accepted : 2011.06.20
  • Published : 2012.06.25
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Abstract

Many innovative design features are employed in the reactor vessel internals of SMART, a small integral-type pressurized water reactor, one of which is the flow skirt, which uniformly distributes flow and horizontally restrains the lower part of the core support barrel. This new design requires a comprehensive investigation of vibration characteristics. Therefore, in this study, modal characteristics of flow skirts are investigated with finite element analysis. Specifically, we investigate how the presence of holes, the presence of three rings attached to the flow skirt, and the thickness of the lowest shell effect vibration characteristics. In addition, the fluid effect is addressed, since the flow skirt is submerged in the fluid.

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References

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