期刊
FUSION ENGINEERING AND DESIGN
卷 169, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.fusengdes.2021.112497
关键词
Radiation transport; Neutron-wall interaction; Fusion reactors shielding; SINBAD
资金
- European Union Regional Development Fund (ERDF)
- Severo Ochoa fellowship
The study presents significant improvements and validations of a deterministic neutron transport code dedicated to solving the Boltzmann Transport Equation. The code is integrated as a module in the Alya software package using multi-group energy discretization and FEM on unstructured meshes to treat complex domains. Real base expressions are used to introduce the anisotropy of the scattering medium.
We present significant improvements and validations of a deterministic neutron transport code (NEUTRO) dedicated to solving the Boltzmann Transport Equation. The code is integrated as a module in the Alya software package developed by the Barcelona Supercomputing Center which uses the Discrete Ordinates Method on angular coordinates, multi-group for energy discretization and FEM on unstructured meshes to treat special complex domains. The anisotropy of the scattering medium is introduced into the scattering kernel using real base expressions for spherical harmonics. In order to build the total cross-section and the respective group matrix for the elastic cross-section, we use the NJOY code. We test the solver using different geometries, orders of integration for the angular discretization and number of energy groups. Finally, we compare our results against benchmarks obtained from an NEA database that reported measurements of leakage spectra of several materials.
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