APROS 3-D core models for simulators - and plant analyzers

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review


    The 3-D core models of APROS simulation environment can be used in simulator and plant analyzer applications, as well as in safety analysis. The key feature of APROS models is that the same physical models can be used in all applications. For three-dimensional reactor cores the APROS models cover both quadratic BWR and PWR cores and the hexagonal lattice VVER-type cores. In APROS environment the user can select the number of flow channels in the core and either five- or six-equation thermal hydraulic model for these channels. The thermal hydraulic model and the channel description have a decisive effect on the calculation time of the 3-D core model and thus just these selections make at present the major difference between a safety analysis model and a training simulator model. The paper presents examples of various types of 3-D LWR-type core descriptions for simulator and plant analyzer use and discusses the differences of calculation speed and physical results between a typical safety analysis model description and a real-time simulator model description in transients.
    Original languageEnglish
    Title of host publicationProceedings of the 2nd CSNI Specialist Meeting on Simulators and Plant Analysers
    Place of PublicationEspoo
    PublisherVTT Technical Research Centre of Finland
    ISBN (Print)951-38-5269-5
    Publication statusPublished - 1999
    MoE publication typeA4 Article in a conference publication
    Event2nd CSNI Specialist Meeting on Simulators and Plant Analysers - Espoo, Finland
    Duration: 29 Sept 19972 Oct 1997

    Publication series

    SeriesVTT Symposium


    Conference2nd CSNI Specialist Meeting on Simulators and Plant Analysers


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