Serpent/OpenFOAM coupled simulation for KLT-40S fuel pin 3D burnup analysis
Penulis/Author
ALMANZO ARJUNA (1); Dr. Ir. Alexander Agung, S.T., M.Sc., IPU. (2); Ir. Kutut Suryapratomo, M.T., M.Sc. (3)
Tanggal/Date
2022
Kata Kunci/Keyword
Abstrak/Abstract
The method to integrate several aspects in nuclear reactor is being developed to increase the safety, reliability, and accuraccy of nuclear reactor modelling. One of the aspects which this integration may affect is the feedback loop from the temperature and density on the neutronic analysis. This can be achieved through neutronic and thermal hydraulic coupled analysis. The drawback of this method is to achieve a stable and good result it needs a lot of computational power. This paper presents an approach for 3D burnup analysis with Serpent Monte Carlo Code and OpenFOAM using KLT-40S fuel pin as a model. We use CFD to simulate the flow on the fuel pin because of its flexibility and accuraccy, also Serpent already have a built-in module to do multi-physics analysis with OpenFOAM. The geometry of the simulation is as follows, the hexagonal lattice of fuel pin with UO2 fuel pin in the center surrounded by water with a hexagonal boundary and a third of fuel pin in each hexagonal edges of the water. We compare the results between the coupled and non-coupled case. The results show that thermal hydraulics feedback affects the neutron flux which leads to difference in nuclide density. Some improvement can be adjusted on the OpenFOAM case. In the future we plan on extend the simulation for the fuel assembly design.
