Experimental studies on melt spreading, bubbling heat transfer, and coolant layer boiling

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Melt spreading studies have been undertaken to investigate the extent to which molten core debris may be expected to spread under gravity forces in a BWR drywell geometry. The objectives are to determine the extent of melt spreading as a function of melt mass,melt superheat, and water depth. These studies will enable an objective determination of whether or not core debris can spread up to and contact containment structures or boundaries upon vessel failure. Results indicate that the most important variables are the melt superheat and the water depth. Studies have revealed five distinct regimes of melt spreading ranging from ... continued below

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Pages: 18

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Greene, G.A.; Finfrock, C.; Klages, J.; Schwarz, C.E. & Burson, S.B. January 1, 1988.

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Description

Melt spreading studies have been undertaken to investigate the extent to which molten core debris may be expected to spread under gravity forces in a BWR drywell geometry. The objectives are to determine the extent of melt spreading as a function of melt mass,melt superheat, and water depth. These studies will enable an objective determination of whether or not core debris can spread up to and contact containment structures or boundaries upon vessel failure. Results indicate that the most important variables are the melt superheat and the water depth. Studies have revealed five distinct regimes of melt spreading ranging from hydrodynamically-limited to heat transfer-limited. A single parameter dimensionless correlation is presented which identified the spreading regime and allows for mechanistic calculation of the average thickness to which the melt will spread. 7 refs., 12 figs.

Physical Description

Pages: 18

Notes

NTIS, PC A03/MF A01 - OSTI; 1.

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  • 16. water reactor safety information meeting, Gaithersburg, MD, USA, 24 Oct 1988

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  • Other: DE89009519
  • Report No.: BNL-NUREG-42299
  • Report No.: CONF-8810155-48
  • Grant Number: AC02-76CH00016
  • Office of Scientific & Technical Information Report Number: 6376287
  • Archival Resource Key: ark:/67531/metadc1206556

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Office of Scientific & Technical Information Technical Reports

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Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • January 1, 1988

Added to The UNT Digital Library

  • July 5, 2018, 11:11 p.m.

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  • Oct. 18, 2018, 5:12 p.m.

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Greene, G.A.; Finfrock, C.; Klages, J.; Schwarz, C.E. & Burson, S.B. Experimental studies on melt spreading, bubbling heat transfer, and coolant layer boiling, article, January 1, 1988; United States. (digital.library.unt.edu/ark:/67531/metadc1206556/: accessed November 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.