Numerical study of collision behavior of melt drops during fuelcoolant interaction

Panpan Wen, Gen Li*, Jinchen Gao, Yupeng Li, Akifumi Yamaji, Junjie Yan

*この研究の対応する著者

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

The collision dynamics between two droplets plays an important role in various disciplines of nature and practical interests, such as fuel-coolant interaction (FCI), fuel combustion in engines, and various spraying process. FCI presents in nuclear reactor severe accident when the melt relocates into the coolant in the lower head with violent disturbance and vigorous heat transfer. The purpose of this study is to investigate the collision behavior of melt droplets during fuel-coolant interaction. The collision of two equal-sized droplets has been simulated in 3D by using the volume of fluid (VOF) and adaptive mesh refinement method. The numerical simulations of tetradecane droplet collision were carried out to validate the numerical methods. The results showed good agreement with the experiments. Furthermore, the simulations of uranium dioxide (UO2) droplets collision in coolant were carried out. The results showed that the contact area between droplets and coolant increased with time first and then decreased. With the increase of Weber number, the contact area of maximum in the droplet collision increased. Break happened in the later period and many child droplets formed. The number of child droplets increased with the increase of Weber number. In addition, the size distribution of little droplets was investigated.

本文言語English
ホスト出版物のタイトルStudent Paper Competition; Thermal-Hydraulics; Verification and Validation
出版社American Society of Mechanical Engineers (ASME)
ISBN(印刷版)9784888982566
出版ステータスPublished - 2020
イベント2020 International Conference on Nuclear Engineering, ICONE 2020, collocated with the ASME 2020 Power Conference - Virtual, Online
継続期間: 2020 4 42020 4 5

出版物シリーズ

名前International Conference on Nuclear Engineering, Proceedings, ICONE
3

Conference

Conference2020 International Conference on Nuclear Engineering, ICONE 2020, collocated with the ASME 2020 Power Conference
CityVirtual, Online
Period20/4/420/4/5

ASJC Scopus subject areas

  • 原子力エネルギーおよび原子力工学

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