Development of a framework for the neutronics analysis system for next generation (Contract research)

Tatsumi, Masahiro*; Yokoyama, Kenji   

JAEA has been promoting the development of innovative analysis methods and models for next-generation nuclear reactor systems; advanced analysis system has been developing to apply the object-oriented approach in order to reflect such the latest methods and models to basic designs and operations of reactors in the efficient and effective way. The developing system adopt the two-layer model which consists of a control layer written in the Python and a solver layer in the C++. The principle on the two-layer model was examined followed by the design and implementation of a library that enabled transparent transfer of data models between the two layers. In each layer, appropriate numerical library was used for better performance. In the present library, a model proxy was implemented to exchange internal data that is represented in different ways in each layer. With this mechanism, it confirmed that data exchange between the layers can be performed easily and effectively.