Tridimensional core transient analysis methods (TRICOT): The porous medium model PORFLO for 3D two-phase flow and its application to BWR fuel bundle simulations

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Abstract

This presentation describes the current status of the PORFLO code and the latest developments made in the second subtask of the SAFIR2010/TRICOT project. The present work is a continuation of the corresponding previous SAFIR project. In PORFLO, the basic features of the computer code include assumption of porous medium, description of the problem in Cartesian coordinates and the use of either the five-equation model (with a mixture momentum conservation equation) or the six-equation model for the solution of the two-phase flow problem. The most important development steps made during 2008 were: the implementation of the six-equation model to PORFLO and the development of new iterative solvers and preconditioning methods for the solution of the pressure correction equations of both the five-equation SIMPLE algorithm and the newly developed (six-equation) Phase-Coupled SIMPLE algorithm. As a result of the new iterative solvers and preconditioning methods the computation time has been reduced almost by an order of magnitude.
Original languageEnglish
Title of host publicationSAFIR2010: The Finnish Research Programme on Nuclear Power Plant Safety 2007-2010
Subtitle of host publicationInterim Report
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Pages131-141
ISBN (Electronic)978-951-38-7267-0
ISBN (Print)978-951-38-7266-3
Publication statusPublished - 2009
MoE publication typeNot Eligible

Publication series

SeriesVTT Tiedotteita - Research Notes
Number2466
ISSN1235-0605

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Ilvonen, M., & Hovi, V. (2009). Tridimensional core transient analysis methods (TRICOT): The porous medium model PORFLO for 3D two-phase flow and its application to BWR fuel bundle simulations. In SAFIR2010: The Finnish Research Programme on Nuclear Power Plant Safety 2007-2010: Interim Report (pp. 131-141). VTT Technical Research Centre of Finland. VTT Tiedotteita - Research Notes, No. 2466