Motion model of spent fuel rack considering two-dimensional gap flow

Akane Uemichi*, Yuto Araki, Shigehiko Kaneko

*この研究の対応する著者

研究成果: Conference contribution

抄録

Free-standing rack system, where each rack is not fixed to the floor nor the wall, is proposed and is in use in European countries and the US as a storage method of the nuclear power station spent fuel. Although this system can reduce the influence of the excitation force of earthquake by making use of frictional force between the bottom surface of the rack and the floor surface together with the fluid force excited by the motion of each rack, design guidelines are not yet established. In this research, to evaluate the fluid force more precisely, the gap between the racks is treated as a two-dimensional gap flow, the pressure loss coefficient at the flow path junction and the top of the flow path were estimated based on the steady CFD calculation and incorporated with the motion model. Our main concern in this paper is the rocking motion. As a result, it was concluded that rocking motion can be suppressed by increasing the pressure loss coefficient at the top of the fuel rack.

本文言語English
ホスト出版物のタイトルFluid-Structure Interaction
出版社American Society of Mechanical Engineers (ASME)
ISBN(電子版)9780791883846
DOI
出版ステータスPublished - 2020
イベントASME 2020 Pressure Vessels and Piping Conference, PVP 2020 - Virtual, Online
継続期間: 2020 8 3 → …

出版物シリーズ

名前American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
4
ISSN(印刷版)0277-027X

Conference

ConferenceASME 2020 Pressure Vessels and Piping Conference, PVP 2020
CityVirtual, Online
Period20/8/3 → …

ASJC Scopus subject areas

  • 機械工学

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