TY - JOUR
T1 - Formation and transport of lead oxide in a non-isothermal lead-bismutheutectic loop
AU - Gladinez, Kristof
AU - Rosseel, Kris
AU - Lim, Jun
AU - Marino, Alessandro
AU - Heynderickx, Geraldine
AU - Aerts, Alexander
N1 - Score=10
PY - 2019/4/24
Y1 - 2019/4/24
N2 - Lead oxide (PbO) formation can occur in Lead-Bismuth Eutectic (LBE)-cooled nuclear systems in case of oxygen ingress or temperature decrease of the coolant beyond the normal operation ranges. In the present work the
formation of lead oxide in an actively cooled LBE flow is studied. Computational fluid dynamics (CFD) is used to predict the nucleation, growth and dissolution of PbO particles. Solid oxide particles are modeled as a pseudocontinuous phase, using the Kinetic Theory of Granular Flow (KTGF) to account for particle-flow interaction. The particle size distribution (PSD) is accounted for using Population Balance Equations/Models (PBE/PBM). The results obtained from the model are qualitatively in good agreement with experimental results obtained in the MEXICO loop at SCK·CEN. The calculated PSD reveals that the majority of the oxide particles are expected to be in the sub-micron range. Experimental results indicate that in the studied conditions PbO nucleates in the LBE bulk leading to suspended particles in the LBE flow.
AB - Lead oxide (PbO) formation can occur in Lead-Bismuth Eutectic (LBE)-cooled nuclear systems in case of oxygen ingress or temperature decrease of the coolant beyond the normal operation ranges. In the present work the
formation of lead oxide in an actively cooled LBE flow is studied. Computational fluid dynamics (CFD) is used to predict the nucleation, growth and dissolution of PbO particles. Solid oxide particles are modeled as a pseudocontinuous phase, using the Kinetic Theory of Granular Flow (KTGF) to account for particle-flow interaction. The particle size distribution (PSD) is accounted for using Population Balance Equations/Models (PBE/PBM). The results obtained from the model are qualitatively in good agreement with experimental results obtained in the MEXICO loop at SCK·CEN. The calculated PSD reveals that the majority of the oxide particles are expected to be in the sub-micron range. Experimental results indicate that in the studied conditions PbO nucleates in the LBE bulk leading to suspended particles in the LBE flow.
KW - Lead-bismuth eutectic
KW - Accelerator Driven System
KW - Nucleation
KW - Oxidation
KW - KTGF
KW - Lead oxide
UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/34629334
U2 - 10.1016/j.nucengdes.2019.04.021
DO - 10.1016/j.nucengdes.2019.04.021
M3 - Article
VL - 349
SP - 78
EP - 85
JO - Nuclear Engineering and Design
JF - Nuclear Engineering and Design
SN - 0029-5493
ER -