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 en...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
VINCA Institute of Nuclear Sciences
2020-01-01
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| Series: | Nuclear Technology and Radiation Protection |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/1451-3994/2020/1451-39942001016R.pdf |
| 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. |
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| ISSN: | 1451-3994 1452-8185 |