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首次提出将子群方法用于密集峰区域,小波方法用于孤立峰区域的耦合共振计算方法。首先,对子群方法和小波方法的理论模型进行优化,然后在共振能区通过散射源项的计算进行耦合,达到精确计算包含孤立峰和密集峰的整个共振能区的有效共振自屏截面的目的。对压水堆栅元问题等共振基准题的计算结果表明:该耦合方法和其他传统的多群共振计算模型以及连续能量共振计算模型相比,可保证较高的计算效率,同时能精确计算整个共振能区的有效共振自屏截面,为后续的组件计算提供精确的输入参数。
For the first time, the sub-group method is applied to the dense peak area and the wavelet method is used to calculate the coupled resonance of the isolated peak area. Firstly, the theoretical models of sub-group method and wavelet method are optimized and then coupled in the resonance energy region by the calculation of scattering source terms to achieve the accurate calculation of the effective resonant self-screen cross section of the entire resonance energy region including the isolated peak and the dense peak purpose. Computation results of resonance reference problems such as the cell problem of pressurized water reactor show that the coupling method can ensure higher computational efficiency than other traditional multi-cluster resonance models and continuous energy resonance models and can accurately calculate the whole Effective resonant resonance energy from the screen cross-section, for the subsequent components to provide accurate input parameters.