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An investigation of cross-section geometry effects on the deposition rate in annular two-phase flows with a Lagrangian model
KTH, School of Engineering Sciences (SCI), Physics, Reactor Technology.
KTH, School of Engineering Sciences (SCI), Physics, Reactor Technology.ORCID iD: 0000-0001-5595-1952
2007 (English)In: Proceedings - 12th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH-12, 2007Conference paper, Published paper (Refereed)
Abstract [en]

The motion of liquid drops in annular two-phase flow in pipes, annuli and subchannels has been investigated with a model based on Lagrangian particle tracking. The results confirm that large drops may deposit by direct impaction. It is also demonstrated that the deposition rate does not differ significantly between pipes and subchannels except for very large drops, which deposit slower in subchannels. Furthermore the Saffman lift force is shown to have a large impact on the results but it is questionable of the standard formulation is applicable to the drops considered here. Finally it is concluded that accurate modeling of high pressure steam-water flows requires a model for drop-drop collisions.

Place, publisher, year, edition, pages
2007.
Keyword [en]
Annular flow, Deposition, Dryout, Lagrangian, Particle tracking
National Category
Energy Engineering
Research subject
SRA - Energy
Identifiers
URN: urn:nbn:se:kth:diva-80449Scopus ID: 2-s2.0-44349105991ISBN: 978-089448058-4 ISBN: 0894480588 (print)OAI: oai:DiVA.org:kth-80449DiVA: diva2:496336
Conference
12th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH-12; Pittsburgh, PA; United States; 30 September 2007 through 4 October 2007
Funder
StandUp
Note

QC 20120228

Available from: 2012-02-09 Created: 2012-02-09 Last updated: 2014-11-06Bibliographically approved

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Anglart, Henryk

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  • de-DE
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Output format
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