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Dryout predictions in bwr fuel assemblies with spacers
KTH, Tidigare Institutioner, Fysik.
KTH, Tidigare Institutioner, Fysik.ORCID-id: 0000-0001-5595-1952
2004 (Engelska)Ingår i: Proceedings of the Sixth International Conference on Nuclear Thermal-Hydraulics, Operation and Safety, 2004Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

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.

Ort, förlag, år, upplaga, sidor
2004.
Nyckelord [en]
Dryout, mechanistic, spacer, subchannel, BWR
Nationell ämneskategori
Energiteknik
Forskningsämne
SRA - Energi
Identifikatorer
URN: urn:nbn:se:kth:diva-79203OAI: oai:DiVA.org:kth-79203DiVA, id: diva2:495230
Konferens
NUTHOS-6
Forskningsfinansiär
StandUp
Anmärkning

QC 20130226

Tillgänglig från: 2012-02-08 Skapad: 2012-02-08 Senast uppdaterad: 2013-02-26Bibliografiskt granskad

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Anglart, Henryk

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Adamsson, CarlAnglart, Henryk
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