### Abstract

Original language | English |
---|---|

Title of host publication | SAFIR2010: The Finnish Research Programme on Nuclear Power Plant Safety 2007-2010 |

Subtitle of host publication | Interim Report |

Place of Publication | Espoo |

Publisher | VTT Technical Research Centre of Finland |

Pages | 131-141 |

ISBN (Electronic) | 978-951-38-7267-0 |

ISBN (Print) | 978-951-38-7266-3 |

Publication status | Published - 2009 |

MoE publication type | Not Eligible |

### Publication series

Series | VTT Tiedotteita - Research Notes |
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Number | 2466 |

ISSN | 1235-0605 |

### Fingerprint

### Cite this

*SAFIR2010: The Finnish Research Programme on Nuclear Power Plant Safety 2007-2010: Interim Report*(pp. 131-141). Espoo: VTT Technical Research Centre of Finland. VTT Tiedotteita - Research Notes, No. 2466

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*SAFIR2010: The Finnish Research Programme on Nuclear Power Plant Safety 2007-2010: Interim Report .*VTT Technical Research Centre of Finland, Espoo, VTT Tiedotteita - Research Notes, no. 2466, pp. 131-141.

**Tridimensional core transient analysis methods (TRICOT) : The porous medium model PORFLO for 3D two-phase flow and its application to BWR fuel bundle simulations.** / Ilvonen, Mikko; Hovi, Ville.

Research output: Chapter in Book/Report/Conference proceeding › Chapter or book article › Professional

TY - CHAP

T1 - Tridimensional core transient analysis methods (TRICOT)

T2 - The porous medium model PORFLO for 3D two-phase flow and its application to BWR fuel bundle simulations

AU - Ilvonen, Mikko

AU - Hovi, Ville

PY - 2009

Y1 - 2009

N2 - 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.

AB - 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.

M3 - Chapter or book article

SN - 978-951-38-7266-3

T3 - VTT Tiedotteita - Research Notes

SP - 131

EP - 141

BT - SAFIR2010: The Finnish Research Programme on Nuclear Power Plant Safety 2007-2010

PB - VTT Technical Research Centre of Finland

CY - Espoo

ER -