Reactor physics and dynamics (READY): ARES - a new BWR simulator

Riku Mattila

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional


Coupling the three-dimensional Analytic Function Expansion Nodal (AFEN) nodal model [1, 2] developed within the READY project in 2000-2001 with a four-equation based stationary-state thermalhydraulics module [3] and a new cross section model [4], a basis has been created for a sophisticated BWR simulator code. Motivation for distilling the efforts into a new simulator, named ARES (AFEN Reactor Simulator), can be summarized in three main points: · Stationary-state analyses required by the safety authorities must be independent from the calculations made by the power utilities. Using a different simulator for some calculations is an effective method for obtaining independent results. · In order to keep up with the development in the core analysis field, a "test bench" is required for testing and evaluating new ideas and models. In addition, accuracy of the commercial codes and the models incorporated in them can be evaluated by benchmarking them against the new simulator. · Writing a new program from scratch is potentially a good way to transfer experience from the first generation of Finnish nuclear engineers. It also gives the opportunity to re-evaluate some of the ideas used in the older codes written in times of significantly smaller computer capacity.
Original languageEnglish
Title of host publicationFINNUS: The Finnish Research Programme on Nuclear Power Plant Safety 1999-2002
Subtitle of host publicationFinal Report
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
ISBN (Electronic)951-38-6086-8
ISBN (Print)951-38-6085-X
Publication statusPublished - 2002
MoE publication typeNot Eligible

Publication series

SeriesVTT Tiedotteita - Research Notes


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