Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
An Experimental Study on Dryout Heat Flux in Particulate Bed Packed with Irregular Particles
KTH, School of Engineering Sciences (SCI), Physics, Nuclear Power Safety.
KTH, School of Engineering Sciences (SCI), Physics, Nuclear Power Safety.
KTH, School of Engineering Sciences (SCI), Physics, Nuclear Power Safety.ORCID iD: 0000-0002-0683-9136
KTH, School of Engineering Sciences (SCI), Physics, Nuclear Power Safety.
2011 (English)In: Proceedings of the 2011 international congress on advances in nuclear power plants: ICAPP2011, American Nuclear Society, 2011Conference paper, Published paper (Refereed)
Abstract [en]

This paper is concerned with reducing uncertainty in quantification of debris bed coolability in ahypothetical severe accident of light water reactors (LWRs), when the molten corium is relocatedinto a water pool, fragmenting and forming a particulate debris bed on the pool bottom.The test facility POMECO-HT at KTH is employed to investigate the coolability of particulatebeds which have some characteristics of a prototypical debris bed, such as packed with particlesof multiple sizes and irregular shapes. The facility features a high power capacity (up to 2.1MW/m2) which enables to obtain the dryout heat flux of a particulate bed formed by the DEFORparticles [1-2] for top-flooding and bottom-injection schemes. The particulate beds are chosen insuch a way that some characteristics of debris bed prototypicality analyzed in our previous study[3] can be reflected, so that the data can be used to confirm the previous analysis results. Threeparticulate beds, named Bed-1 through Bed-3, were employed in the present study to obtain thecorresponding dryout heat fluxes. Bed-1 and Bed-2 are both packed with sand particles whosesize distributions are similar to that of the DEFOR debris particles, with Bed-2 having a simulantcake embedded in the upper layer of the bed. Bed-3 is packed with DEFOR debris particles.The experimental results show that the dryout heat flux of the top-flooding beds can be predictedb y the Reed’s model. The bottom injection of coolant increases the dryout heat flux significantly,i.e., with an increase in water injection flowrate, the value of dryout heat flux is elevated.Meanwhile, the elevation of dryout position is moving upwards with increasing bottom-injectionflowrate. When a cake exits in a particulate bed, the dryout heat flux of the bed is significantlydecreased (up to 50%), and the dryout points a l w a y s located in the cake, for both the topflooding and bottom-fed configurations.

Place, publisher, year, edition, pages
American Nuclear Society, 2011.
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-53584OAI: oai:DiVA.org:kth-53584DiVA: diva2:470382
Conference
2011 international congress on advances in nuclear power plants (ICAPP 2011), Nice, France, 2-5 May, 2011
Note
QC 20120416Available from: 2011-12-28 Created: 2011-12-28 Last updated: 2012-04-16Bibliographically approved

Open Access in DiVA

No full text

Other links

http://icapp.ans.org/icapp11/program/abstracts/11185.pdf

Authority records BETA

Kudinov, Pavel

Search in DiVA

By author/editor
Li, LiangxingKarbojian, AramKudinov, PavelMa, Weimin
By organisation
Nuclear Power Safety
Energy Engineering

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 91 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf