Final Report on the Small-Scale Vapor-Explosion Experiments Using a Molten NaCl-H2O System

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Description

Vapor explosions were produced by injecting small quantities of water into a container filled with molten sodium chloride. Minimum explosion efficiencies, as evaluated from reaction-impulse measurements, were relatively large. Subsurface movies showed that the explosions resulted from a two-step sequence: an initial bulk-mixing phase in which the two liquids intermix on a large scale, but remain locally separated by an insulating gas-vapor layer; and a second step, immediately following breakdown of the gas layer, during which the two liquids locally fragment, intermix, and pressurize very rapidly. The experimental results were compared with various mechanistic models that had been proposed to … continued below

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45 p. : ill., tables

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Anderson, R. P. & Bova, L. April 1976.

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  • Main Title: Final Report on the Small-Scale Vapor-Explosion Experiments Using a Molten NaCl-H2O System
  • Added Title: ANL (Series)
  • Added Title: Argonne National Laboratory Report ANL-76-57
  • Series Title: Argonne National Laboratory Reports

Description

Vapor explosions were produced by injecting small quantities of water into a container filled with molten sodium chloride. Minimum explosion efficiencies, as evaluated from reaction-impulse measurements, were relatively large. Subsurface movies showed that the explosions resulted from a two-step sequence: an initial bulk-mixing phase in which the two liquids intermix on a large scale, but remain locally separated by an insulating gas-vapor layer; and a second step, immediately following breakdown of the gas layer, during which the two liquids locally fragment, intermix, and pressurize very rapidly. The experimental results were compared with various mechanistic models that had been proposed to explain vapor explosions. Early models seemed inconsistent with the results. More recent theories suggest that vapor explosions may be caused by a nucleation limit or by dynamic mixing combined with high surface-heat-transfer rates. Both types of models are consistent with the results.

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45 p. : ill., tables

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  • OCLC: 878680711
  • SuDoc Number: Y 3.AT 7:22/ANL-76-57
  • Report No.: ANL-76-57
  • Grant Number: W-31-109-Eng-38
  • Archival Resource Key: ark:/67531/metadc282701

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Technical Report Archive and Image Library

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  • April 1976

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  • Aug. 4, 2015, 8:33 a.m.

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Anderson, R. P. & Bova, L. Final Report on the Small-Scale Vapor-Explosion Experiments Using a Molten NaCl-H2O System, report, April 1976; Argonne, Illinois. (https://digital.library.unt.edu/ark:/67531/metadc282701/: accessed September 12, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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