抄録
During the severe accident, the core melt could leak out of the reactor pressure vessel through the broken instrument tubes of the RPV lower head. Thus, the melt freezing behavior in an instrument tube is a key factor that concerns the failure of the reactor pressure boundary. In this study, the Moving Particle Semi-implicit (MPS) method was adopted to analyze the melt penetration and solidification behaviors in a tube. The change of melt viscosity with temperature was taken into account in the present MPS method. The influence of surface tension on the melt penetration behavior was also considered. The numerical results had been compared with the upward melt injection experiments. The comparative results showed that the melt penetration lengths were in good agreement with the experiments. The typical melt freezing behaviors were successfully reproduced by MPS method. The crust formed on the surface of the tube increased the melt flowing resistance. The melt velocity also decreased due to the increase of its viscosity. The present results indicate that MPS method has the capacity to analyze the melt freezing behavior in the lower head penetration tubes.
| 元の言語 | English |
|---|---|
| ホスト出版物のタイトル | International Conference on Nuclear Engineering, Proceedings, ICONE |
| 出版者 | American Society of Mechanical Engineers (ASME) |
| 巻 | 6 |
| ISBN（印刷物） | 9780791845967 |
| DOI | |
| 出版物ステータス | Published - 2014 |
| イベント | 2014 22nd International Conference on Nuclear Engineering, ICONE 2014 - Prague 継続期間: 2014 7 7 → 2014 7 11 |
Other
| Other | 2014 22nd International Conference on Nuclear Engineering, ICONE 2014 |
|---|---|
| 市 | Prague |
| 期間 | 14/7/7 → 14/7/11 |
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ASJC Scopus subject areas
- Nuclear Energy and Engineering
これを引用
Analysis of melt behavior in a cold tube by mps method. / Chen, Ronghua; Oka, Yoshiaki; Li, Gen; Matsuura, Takashi.
International Conference on Nuclear Engineering, Proceedings, ICONE. 巻 6 American Society of Mechanical Engineers (ASME), 2014.研究成果: Conference contribution
}
TY - GEN
T1 - Analysis of melt behavior in a cold tube by mps method
AU - Chen, Ronghua
AU - Oka, Yoshiaki
AU - Li, Gen
AU - Matsuura, Takashi
PY - 2014
Y1 - 2014
N2 - During the severe accident, the core melt could leak out of the reactor pressure vessel through the broken instrument tubes of the RPV lower head. Thus, the melt freezing behavior in an instrument tube is a key factor that concerns the failure of the reactor pressure boundary. In this study, the Moving Particle Semi-implicit (MPS) method was adopted to analyze the melt penetration and solidification behaviors in a tube. The change of melt viscosity with temperature was taken into account in the present MPS method. The influence of surface tension on the melt penetration behavior was also considered. The numerical results had been compared with the upward melt injection experiments. The comparative results showed that the melt penetration lengths were in good agreement with the experiments. The typical melt freezing behaviors were successfully reproduced by MPS method. The crust formed on the surface of the tube increased the melt flowing resistance. The melt velocity also decreased due to the increase of its viscosity. The present results indicate that MPS method has the capacity to analyze the melt freezing behavior in the lower head penetration tubes.
AB - During the severe accident, the core melt could leak out of the reactor pressure vessel through the broken instrument tubes of the RPV lower head. Thus, the melt freezing behavior in an instrument tube is a key factor that concerns the failure of the reactor pressure boundary. In this study, the Moving Particle Semi-implicit (MPS) method was adopted to analyze the melt penetration and solidification behaviors in a tube. The change of melt viscosity with temperature was taken into account in the present MPS method. The influence of surface tension on the melt penetration behavior was also considered. The numerical results had been compared with the upward melt injection experiments. The comparative results showed that the melt penetration lengths were in good agreement with the experiments. The typical melt freezing behaviors were successfully reproduced by MPS method. The crust formed on the surface of the tube increased the melt flowing resistance. The melt velocity also decreased due to the increase of its viscosity. The present results indicate that MPS method has the capacity to analyze the melt freezing behavior in the lower head penetration tubes.
UR - http://www.scopus.com/inward/record.url?scp=84911933831&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84911933831&partnerID=8YFLogxK
U2 - 10.1115/ICONE22-30068
DO - 10.1115/ICONE22-30068
M3 - Conference contribution
AN - SCOPUS:84911933831
SN - 9780791845967
VL - 6
BT - International Conference on Nuclear Engineering, Proceedings, ICONE
PB - American Society of Mechanical Engineers (ASME)
ER -