TY - JOUR
T1 - Experiments and MPS analysis of stratification behavior of two immiscible fluids
AU - Li, Gen
AU - Oka, Yoshiaki
AU - Furuya, Masahiro
AU - Kondo, Masahiro
N1 - Funding Information:
A part of this study is the result of “Mechanistic study of melt behavior in lower RPV head” carried out under the Strategic Promotion Program for Basic Nuclear Research by the Ministry of Education, Culture, Sports, Science and Technology of Japan . The present study was supported by China Scholarship Council through supplying scholarship. The MPS code of the present study was developed based on MPS-SW-MAIN-Ver.2.0 which was kindly provided by S. Koshizuka and K. Shibata.
PY - 2013
Y1 - 2013
N2 - Stratification behavior is of great significance in the late in-vessel stage of core melt severe accident of a nuclear reactor. Conventional numerical methods have difficulties in analyzing stratification process accompanying with free surface without depending on empirical correlations. The Moving Particle Semi-implicit (MPS) method, which calculates free surface and multiphase flow without empirical equations, is applicable for analyzing the stratification behavior of fluids. In the present study, the original MPS method was improved to simulate the stratification behavior of two immiscible fluids. The improved MPS method was validated through simulating classical dam break problem. Then, the stratification processes of two fluid columns and injected fluid were investigated through experiments and simulations, using silicone oil and salt water as the simulant materials. The effects of fluid viscosity and density difference on stratification behavior were also sensitively investigated by simulations. Typical fluid configurations at various parametric and geometrical conditions were observed and well predicted by improved MPS method.
AB - Stratification behavior is of great significance in the late in-vessel stage of core melt severe accident of a nuclear reactor. Conventional numerical methods have difficulties in analyzing stratification process accompanying with free surface without depending on empirical correlations. The Moving Particle Semi-implicit (MPS) method, which calculates free surface and multiphase flow without empirical equations, is applicable for analyzing the stratification behavior of fluids. In the present study, the original MPS method was improved to simulate the stratification behavior of two immiscible fluids. The improved MPS method was validated through simulating classical dam break problem. Then, the stratification processes of two fluid columns and injected fluid were investigated through experiments and simulations, using silicone oil and salt water as the simulant materials. The effects of fluid viscosity and density difference on stratification behavior were also sensitively investigated by simulations. Typical fluid configurations at various parametric and geometrical conditions were observed and well predicted by improved MPS method.
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U2 - 10.1016/j.nucengdes.2013.09.006
DO - 10.1016/j.nucengdes.2013.09.006
M3 - Article
AN - SCOPUS:84886246267
SN - 0029-5493
VL - 265
SP - 210
EP - 221
JO - Nuclear Engineering and Design
JF - Nuclear Engineering and Design
ER -