Use of vertical slip flow and flooding models in LOCA analysis

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Vertical slip flow and flooding models, which have been incorporated in a version of the RELAP4 computer code by Aerojet Nuclear Company have led to significant improvements in modeling nuclear reactor coolant system phenomena during postulated large and small break loss-of-coolant accidents. The vertical slip flow model computes the separated fluid component velocities and directions at vertical flow junctions. Use of the slip model allows the energy transfer between volumes to be based on individual liquid and vapor component flows rather than on the net junction flow. Continuity and momentum equations are unaffected by the addition of slip. The vertical ... continued below

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4 p.

Creation Information

Fischer, S.R. January 1, 1975.

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  • Aerojet Nuclear Company
    Publisher Info: Aerojet Nuclear Co., Idaho Falls, Idaho (USA)
    Place of Publication: Idaho Falls, Idaho

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Description

Vertical slip flow and flooding models, which have been incorporated in a version of the RELAP4 computer code by Aerojet Nuclear Company have led to significant improvements in modeling nuclear reactor coolant system phenomena during postulated large and small break loss-of-coolant accidents. The vertical slip flow model computes the separated fluid component velocities and directions at vertical flow junctions. Use of the slip model allows the energy transfer between volumes to be based on individual liquid and vapor component flows rather than on the net junction flow. Continuity and momentum equations are unaffected by the addition of slip. The vertical flow slip model logic is based on the assumption that gravity forces dominate causing slip between phases. 7 references (auth)

Physical Description

4 p.

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Dep. NTIS

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  • American Nuclear Society meeting, New Orleans, Louisiana, USA, 8 Jun 1975

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  • Report No.: CONF-750607--30
  • Grant Number: AT(10-1)-1375
  • Office of Scientific & Technical Information Report Number: 4131667
  • Archival Resource Key: ark:/67531/metadc863233

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • January 1, 1975

Added to The UNT Digital Library

  • Sept. 16, 2016, 12:32 a.m.

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  • Oct. 26, 2017, 3:25 p.m.

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Fischer, S.R. Use of vertical slip flow and flooding models in LOCA analysis, article, January 1, 1975; Idaho Falls, Idaho. (digital.library.unt.edu/ark:/67531/metadc863233/: accessed June 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.