ナトリウム冷却高速炉の熱流動解析評価手法整備におけるV&V実施手順の具体化,1; 最小2乗法GCI評価手法の構築と不確かさ評価

Establishment of V&V procedure of numerical estimation method for thermal-hydraulic phenomena in sodium-cooled fast reactor, 1; Development of a least square version GCI estimation method (SLS-GCI) and uncertainty quantification

田中 正暁  

Tanaka, Masaaki

ナトリウム冷却高速炉の熱流動解析評価手法の整備において、解析評価結果の信頼性確保にはV&Vが必要である。実施手順具体化の一環として、最小二乗法によるGCI評価手法(SLS-GCI)を整備し、複数の例題に対して不確かさ評価を実施して適用性を確認した。

In development of numerical simulation codes and estimation methods for plant design and safety assessment, implementation of verification and validation (V&V) and uncertainty quantification is required. To establish the practical procedures of the uncertainty quantification, the SLS-GCI (Simplified Least Square version GCI) method modified from the Eca's least-square version GCI method was established. Through the several examinations, the applicability of the SLS-GCI method was confirmed.