Abstract
This work establishes a unified lattice Boltzmann method (LBM) framework to solve the nuclear reactor multi-physics processes involving the neutron transport and heat transfer processes, wherein all the SN, SP3 and P1 approximations are included for neutron transport simulation. The different physical fields can be solved using the general LBM format with different LBM variables definitions, while the same approach and boundary treatment can be applied due to the unified scheme. No complicated data interpolation is required, and the existing LBM codes can be easily extended. Results show that this unified framework can be used to solve the multi-physics problem in both transient and steady state accurately, and all the SN, SP3 and P1 approximations can be applied. This paper can provide a novel framework for the nuclear reactor multi-physics calculation, and due to the high localization, this framework can further be used to large-scale engineering calculation in parallel.
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