検索対象:     
報告書番号:
※ 半角英数字
 年 ~ 
 年

格納容器及び原子炉建屋内におけるエアロゾル粒子沈着量評価手法の開発,4; 原子炉建屋内詳細構造における粒子沈着量評価モデルの検討

Development of the evaluation method for the aerosol particle deposition amounts in the containment vessel and the reactor building, 4; Study on the aerosol particle deposition amounts on the detailed structures in the reactor building

堀口 直樹   ; 宮原 直哉; 上澤 伸一郎  ; 吉田 啓之  ; 逢坂 正彦  

Horiguchi, Naoki; Miyahara, Naoya; Uesawa, Shinichiro; Yoshida, Hiroyuki; Osaka, Masahiko

軽水炉事故時における核分裂生成物の合理的な環境放出量評価に資するため、原子炉建屋内のエアロゾル粒子沈着量をCFDにより解析する手法を開発している。本報では、建屋内の詳細構造の一つである扉の隙間等を模擬した狭隘流路での粒子沈着量モデル化のための予備解析を実施した。その結果、狭隘流路前後の差圧及び粒子径が大きくなるほど粒子の慣性が増加し、気流の向きが大きく変わる曲がり部等での沈着量が大きくなるなど、モデル化において必要な知見が得られた。

Development of a CFD-based analysis method of aerosol deposition amounts in a reactor building has been conducted to contribute to realistic source term evaluation. In order to establish one of the aerosol deposition models at specific structures in a reaction building, preliminary analysis of aerosol deposition amount when passing through a narrow flow channel, namely a door, was conducted. Results showed that aerosol deposition amount increased as the pressure difference between inlet and outlet and the particle diameter increased due to the increase of inertia force of the particles. These results can be important knowledge for the modelling.

Access

:

- Accesses

InCites™

:

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.