Development and validation of a neutron transport solver with [formula omitted] method based on OpenFOAM.

A deterministic neutron transport solver with SP 3 method based on OpenFOAM has been developed and validated in this paper. The physical models, numerical methods and schemes, boundary conditions, and solving strategy are discussed in detail. The approximate Marshak boundary condition of this solver is validated by the ISSA benchmark problem. Pin-by-pin lattice and simplified core neutron transport benchmark problems are introduced to make the validation of the solver. Numerical results show that SP 3 solver developed based on OpenFOAM has the promising prediction accuracy of k e f f , neutron scalar flux, fission power, and control rod worth. Parallel tests of SP 3 solver are also carried out under the million scale meshes, and the solver has an acceptable acceleration ratio and efficiency. No new computational methods or numerical schemes are proposed in this paper. Instead, the main new works in this paper are our detailed and quantified numerical validations of serval international neutron transport benchmark problems for SP 3 solver based on OpenFOAM. The capability of OpenFOAM in performing SP 3 calculations has been further tested and validated in this paper, which gives additional confidence that OpenFOAM can effectively be used for SP 3 analysis. • Detailed and quantified numerical validations of SP 3 solver based on OpenFOAM. • This study shows the accuracy of FV-based SP 3 method in specific benchmarks. • Additional confidence of SP 3 analysis based on OpenFOAM has been enhanced. [ABSTRACT FROM AUTHOR]