TY - GEN
T1 - Research on modeling method and eigenvalue calculation of single dispersion of fuel particles
AU - Yuan, Anmin
AU - Wu, Hongchun
AU - Li, Yunzhao
AU - Cao, Liangzhi
AU - Wang, Cong
AU - Jiang, Chaofei
AU - Yu, Shenzhi
AU - Liao, Yi
AU - Qiu, Jinrong
N1 - Publisher Copyright:
© 2022 American Society of Mechanical Engineers (ASME). All rights reserved.
PY - 2022
Y1 - 2022
N2 - Dispersed particle fuel is an advanced form of fuel with many advantages, which is safer than traditional fuel. But a strong double heterogeneity effect is formed, due to the random dispersion of fuel particles in the matrix. The homogenization and uniform distribution approximation models will thus leads to severe errors. In order to account for the influence of the double heterogeneity effect, a homogenization model, a uniform dispersion model and a random dispersion model are constructed in this paper. Then the MCX program was used for calculation, and the fuels were compared and analyzed, subject to high fuel phase volume and different enrichment. The effect of particle diameter variation on the eigenvalues of the system is revealed, and the errors introduced by the model approximation are also evaluated. It is demonstrated by the results that the double heterogeneity is negligible when the diameter of the fuel particles is less than 100m. However, the double inhomogeneous effect is relatively enhanced under large diameter fuel particles and low enrichment, which requires highprecision calculations. This paper has a certain reference significance for the evaluation of the double heterogeneity effect of the dispersed particle fuel and the correction of the traditional homogenization calculation.
AB - Dispersed particle fuel is an advanced form of fuel with many advantages, which is safer than traditional fuel. But a strong double heterogeneity effect is formed, due to the random dispersion of fuel particles in the matrix. The homogenization and uniform distribution approximation models will thus leads to severe errors. In order to account for the influence of the double heterogeneity effect, a homogenization model, a uniform dispersion model and a random dispersion model are constructed in this paper. Then the MCX program was used for calculation, and the fuels were compared and analyzed, subject to high fuel phase volume and different enrichment. The effect of particle diameter variation on the eigenvalues of the system is revealed, and the errors introduced by the model approximation are also evaluated. It is demonstrated by the results that the double heterogeneity is negligible when the diameter of the fuel particles is less than 100m. However, the double inhomogeneous effect is relatively enhanced under large diameter fuel particles and low enrichment, which requires highprecision calculations. This paper has a certain reference significance for the evaluation of the double heterogeneity effect of the dispersed particle fuel and the correction of the traditional homogenization calculation.
KW - Dispersed particle fuel
KW - Double heterogeneity
KW - Eigenvalues
KW - MCX
UR - https://www.scopus.com/pages/publications/85143168170
U2 - 10.1115/ICONE29-FM2
DO - 10.1115/ICONE29-FM2
M3 - 会议稿件
AN - SCOPUS:85143168170
SN - 9784888982566
T3 - International Conference on Nuclear Engineering, Proceedings, ICONE
BT - Nuclear Fuel and Material, Reactor Physics and Transport Theory, and Fuel Cycle Technology
PB - American Society of Mechanical Engineers (ASME)
T2 - 2022 29th International Conference on Nuclear Engineering, ICONE 2022
Y2 - 8 August 2022 through 12 August 2022
ER -