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1. 发明申请

WO2023072937A1 COMPUTER IMPLEMENTED METHOD FOR SIMULATING AN OPERATION OF A REACTOR CORE 审中-公开
公开(公告)号：WO2023072937A1
公开(公告)日：2023-05-04
申请号：PCT/EP2022/079792
申请日：2022-10-25
申请人： FRAMATOME
发明人： VAN GEEMERT, René
IPC分类号： G21D3/00 , G21C17/00
摘要： The present invention concerns a computer implemented method for simulating an operation of a reactor core (7), the method comprising: determining (100) an initial state of the reactor core (7), the reactor core (7) comprising a plurality of fuel assemblies (10), wherein the core is partitioned in cubes to constitute nodes of a grid; calculating (102, 104), based on the initial state, a nodal target power distribution (p) and/or the target 3D neutron flux distribution (Φ); obtaining (106) an actual power distribution and/or the actual 3D neutron flux distribution of the nuclear reactor core; determining (108) a difference between the target power distribution (p) and the actual power distribution of the nuclear reactor core and/or determining (108) a difference (δΦ) between the target 3D neutron flux distribution (Φ) and the actual 3D neutron flux distribution of the nuclear reactor core; determining (110) modal expansion coeﬃcients (δcℓ) using a Fourier modal decomposition based on the determined difference (δΦ) and applying a Modal Generalized Perturbation Theory, MGPT, to the modal expansion coefficients (δcℓ) for determining a 3D cross-section distribution perturbation (δΣ) causing the determined difference (δΦ); and determining (112) a 3D adaptation distribution (δx) for the determined difference (δΦ) based on the determined 3D cross-section distribution perturbation (δΣ).

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