Study of hydrodynamics performance of a multi-venturi filtering system for BWR severe accident venting strategies

The aim of this project was to determine the capacity of a multi-venturi scrubber filtering system to cope with vented gas mass-flow rate coming from a BWR Mark II primary containment during a long-term station blackout. The multi-venturi filtering system CFD models were developed in the environment...

Full description

Saved in:
Bibliographic Details
Published inNuclear technology & radiation protection Vol. 35; no. 1; pp. 16 - 23
Main Authors Antonio, Reyes-Garcia Alejandro, Eduardo, Sainz-Mejia, Javier, Ortiz-Villafuerte, C, Palacios-Hernandez Javier, Carlos, Lopez-Solis Roberto
Format Journal Article
LanguageEnglish
Published Belgrade Vinca Institute of Nuclear Sciences 01.01.2020
VINCA Institute of Nuclear Sciences
Subjects
Accidents
Blackout
bwr
Computational fluid dynamics
Containment
Filtration
Fluid flow
Gas mixtures
Hydrodynamics
mark ii
Mass flow rate
Mass ratios
openfoam
Pressure drop
salome
severe accident
venturi scrubber
Venturi scrubbers
Online AccessGet full text

Cover

More Information
Summary:The aim of this project was to determine the capacity of a multi-venturi scrubber filtering system to cope with vented gas mass-flow rate coming from a BWR Mark II primary containment during a long-term station blackout. The multi-venturi filtering system CFD models were developed in the environment of the open source platforms SALOME and OpenFoam. The first geometrical model was created based on the dimensions of a well-known experimental setup, and the results of the pressure drop along the streamwise co-ordinate showed a maximum difference of 10 % in relation to the experimental values for different cases of liquid to gas mass ratios. Then a full scale multi-venturi model was developed. To study the performance of this system during conditions expected in a severe accident, a gas mixture similar to that occurring in a BWR Mark II containment at venting pressure was used as inlet gas. The gas mass-flow that can be cleansed by individual venturis and the pressure required to activate those venturis were computed. The pressure drop profiles in each sector were also determined as the function of different liquid loadings. The results showed good agreement with the capacity of the design taken as the reference model. nema
ISSN:1451-3994
1452-8185
DOI:10.2298/NTRP2001016R