This paper presents multi-physics modelling of circulating nuclear fuel in a simple geometry by means of COMSOL 3.3. Among the Circulating Fuel Reactors (CFR), the most promising is the Molten Salt Reactor (MSR). Physics of such circulating nuclear fuel requires five coupled equations of conservation laws: the momentum balance, the energy balance, the neutron balance and the precursors balance. In this complex field, represented by the coupling of thermal-hydrodynamics with neutronics, the highly non linear regime and the wide disparity of time scales, COMSOL was used to investigate the region of reactor that comprises only the flowing fluid, and a parametric study was performed by varying the size of the analyzed region and the inlet velocity of fluid. This study is sufficient to achieve a preliminary evaluation of the thermo-physical behaviour of the system and paves the way for further progress concerning a more complex and realistic MSR geometry.
[1]
S. Patankar.
Numerical Heat Transfer and Fluid Flow
,
2018,
Lecture Notes in Mechanical Engineering.
[2]
C. Brun,et al.
Molten salts and nuclear energy production
,
2007
.
[3]
Kenji Ishibashi,et al.
Neutronics Study on Accelerator Driven Subcritical Systems with Thorium-Based Fuel for Comparison Between Solid and Molten-Salt Fuels
,
2002
.
[4]
J. Duderstadt,et al.
Nuclear reactor analysis
,
1976
.
[5]
Roger A. Rydin,et al.
Dynamic analysis of an accelerator-driven fluid-fueled subcritical radioactive waste burning system
,
1998
.
[6]
Frank-Peter Weiss,et al.
DYN3D-MSR spatial dynamics code for molten salt reactors
,
2007
.
[7]
Frank-Peter Weiss,et al.
DYN1D-MSR dynamics code for molten salt reactors
,
2005
.