熱流動CFD技術の進展; ナトリウム冷却高速炉開発における熱流動解析技術の展開

Progress of CFD in nuclear thermal hydraulics; Deployment of thermal hydraulics CFD technologies for sodium-cooled fast reactor development

田中 正暁 

Tanaka, Masaaki

日本原子力研究開発機構でのナトリウム冷却高速炉(SFR)の開発における熱流動CFD技術の展開として、今後のSFR実証炉の概念設計に向け、「常陽」新規制基準対応の経験を交え、統合評価手法「ARKADIA」で整備する熱流動CFD技術含む解析評価技術基盤の適用と、これまでの解析経験(ナレッジ)を資産化し、有効活用するためのVLS-KMS連携機能の構築について概説した。また、ARKADIAの中で整備中のプラント全系連成解析手法について、デジタルツイン技術に拡張して整備し、SFR開発に適用する予定であることに言及した。

The numerical analysis and evaluation technology base, including thermal hydraulic CFD technology is being developed in the integrated evaluation system named "ARKADIA" at the Japan Atomic Energy Agency. Regarding the deployment of thermal hydraulic CFD technology for the development of sodium-cooled fast reactors (SFR), application strategy of the technology base in ARKADIA to the conceptual design process of the demonstration SFR was briefly introduced, touching on the experiences of the application study to the new regulatory standards for "Joyo". The development of knowledge (KMS) - simulation (VLS) linkage function to concrete capitalization and effectively utilization of the experiences (knowledge) of the numerical analyses in JAEA was also introduced. And furthermore, the extension of the whole plant analysis method being developed in ARKADIA to the digital twin technology in the SFR development was mentioned.