Work

Optimized Method for Solving Boltzmann Transport Equations in Subgroup Method of Resonance Treatment

Year: 2025

Type: article

Abstract: This study presents an optimized subgroup transport equation solving method to enhance the computational efficiency of resonance calculations in high-fidelity reactor core simulations. By consolidating all the resonance groups into an equivalent single group and performing fixed-source calculations only for the representative subgroup cross-sections, this method significantly reduced the computational burden compared to the conventional subgroup method. Validation studies on single-cell, 2D assembly, and 3D assembly problems demonstrated that the proposed method achieves computational accuracy comparable to the conventional approach while requiring fewer fixed-source equations. This advancement offers a promising solution for improving the efficiency of resonance calculations in high-fidelity reactor core simulations, paving the way for more accurate and computationally efficient modeling of complex reactor systems.

Source: Mathematics

DOI: 10.3390/math13091384

Authors: Song Li, Lei Liu, Yongfa Zhang, Qian Zhang, Qi Cai

Institutions: Naval University of Engineering, Zhejiang University

Language: English

Topic: Nuclear reactor physics and engineering

Subfield: Aerospace Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,137

Funders: National Natural Science Foundation of China, China Postdoctoral Science Foundation, Natural Science Foundation of Hubei Province