[2B13-17] 解析手法開発2

[2B17] CBZコードシステムのFRBurnerモジュールへのSP₃メソッド計算機能の開発

(2)成分ごとのナトリウムボイド反応度計算結果の調査と比較

*Junshuang Fan¹、千葉 豪¹ (1. 北大)

キーワード：SP3、摂動、ボイド反応度、成分ごと

Further investigation about the SP₃-Pertuabtion sodium void reactivity calculation capability is performed. In the SP₃-Perturbation case, the scattering component void reactivity can be divided into two parts: φ0-scattering and φ2-sacattering. How to categorize the φ2-scattering is important since φ2 represents the angular neutron flux in SP₃ theory. We use ‘1-D like problem’ (simulating one-dimensional void reactivity calculation problem under two-dimensional system) and ‘True 1-D problem’ to investigate the component-wise void reactivity, and then comparing to the transport theory results. We find the SP₃-Perturbation results highly agree with the transport theory results when considering the φ2-sacattering as non-leakage component reactivity. This feature occurs under both two-dimensional and one-dimensional systems.