Dryout predictions in bwr fuel assemblies with spacers
2004 (English)In: Proceedings of the Sixth International Conference on Nuclear Thermal-Hydraulics, Operation and Safety, 2004Conference paper (Refereed)
A new spacer model has been implemented into the subchannel code Mona-3 and validated against dryout experiments in various rod bundles with different number of spacers and different spacer designs. The spacer-induced deposition enhancement is captured by proper modeling of the turbulence intensity downstream of a spacer.
The Mona-3 code with the new spacer model captures spacer effects in a correct manner. Both the effect of the number of spacers and the effect of the spacer design are predicted correctly. In particular, the critical power difference between 24-rod bundles with 6 and with 7 spacers is measured to be larger than the difference between 25-rod bundles with 6 and with 7 spacers. This experimental finding is well captured with the Mona-3 code with the present spacer model.
Place, publisher, year, edition, pages
Dryout, mechanistic, spacer, subchannel, BWR
Research subject SRA - Energy
IdentifiersURN: urn:nbn:se:kth:diva-79203OAI: oai:DiVA.org:kth-79203DiVA: diva2:495230
QC 201302262012-02-082012-02-082013-02-26Bibliographically approved