Neutron transport acceleration method, electronic device and computer readable storage medium

By using a two-stage generalized equivalent CMFD acceleration method in neutron transport calculation, the block discontinuity factor and diffusion coefficient correction factor are used to iteratively accelerate in the space and energy dimensions, solving the problem of insufficient calculation efficiency and numerical stability in the prior art, and achieving fast, efficient and stable neutron transport calculations.

CN114817834BActive Publication Date: 2025-03-21HARBIN ENG UNIV
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Patent Information

Application Number
CN202210371120.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-04-11
Publication Date
2025-03-21
Estimated Expiration
2042-04-11

AI Technical Summary

Technical Problem

The existing neutron transport calculation acceleration method cannot take into account both computational efficiency and numerical stability, resulting in long calculation time and unstable numerical values.

Method used

The two-stage generalized equivalent CMFD (gCMFD) acceleration method is used to establish the equivalence of the multi-group and single-group gCMFD equations by iterative acceleration in the spatial dimension and energy dimension respectively, and the node block discontinuity factor and diffusion coefficient correction factor are used.

Benefits of technology

It realizes rapid acceleration of neutron transport calculation, improves calculation efficiency, and ensures numerical stability, solving the shortcomings of traditional CMFD in computing efficiency and numerical stability.

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Abstract

The present invention proposes a neutron transport acceleration method, electronic device and computer-readable storage medium, the method comprising: based on the initial parameter set of the neutron transport equation, establishing a multi-group gCMFD equation equivalent to the initial neutron transport equation; iteratively accelerating the neutron transport equation through the multi-group gCMFD equation in the spatial dimension until the iteration satisfies the first convergence condition, and establishing an equivalent single-group gCMFD mode equation; and iteratively accelerating the multi-group gCMFD equation through the single-group gCMFD equation in the energy dimension until the iteration satisfies the second convergence condition. The technical scheme of the present invention strictly guarantees the equivalence between the multi-group gCMFD equation and the neutron transport equation, the single-group gCMFD equation and the multi-group gCMFD equation, and the stability of the accelerated calculation, which can accelerate the neutron transport calculation faster and improve the overall calculation efficiency.
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