Numerical Modeling of Mixing and Venting from Explosions in Underground Chambers

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2D and 3D numerical simulations were performed to study the dynamic interaction of explosion products in an underground concrete chamber with ambient air, barrels of water, and the surrounding walls and structure. The simulations were carried out with GEODYN, a multi-material, Godunov-based Eulerian code that employs adaptive mesh refinement and runs efficiently on massively parallel computer platforms. Tabular equations of state were used to model materials under shock loading. An appropriate constitutive model was used to describe the concrete. Interfaces between materials were either tracked with a volume-of-fluid method that used high-order reconstruction to specify the interface location and orientation, ... continued below

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6 p. (0.1 MB)

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Liu, B T; Lomov, I & Glenn, L A June 22, 2005.

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2D and 3D numerical simulations were performed to study the dynamic interaction of explosion products in an underground concrete chamber with ambient air, barrels of water, and the surrounding walls and structure. The simulations were carried out with GEODYN, a multi-material, Godunov-based Eulerian code that employs adaptive mesh refinement and runs efficiently on massively parallel computer platforms. Tabular equations of state were used to model materials under shock loading. An appropriate constitutive model was used to describe the concrete. Interfaces between materials were either tracked with a volume-of-fluid method that used high-order reconstruction to specify the interface location and orientation, or a capturing approach was employed with the assumption of local thermal and mechanical equilibrium. A major focus of the study was to estimate the extent of water heating that could be obtained prior to venting of the chamber. Parameters investigated included the chamber layout, energy density in the chamber and the yield-to-water mass ratio. Turbulent mixing was found to be the dominant heat transfer mechanism for heating the water.

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6 p. (0.1 MB)

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PDF-file: 6 pages; size: 0.1 Mbytes

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  • Presented at: APS Tocial Conference on Shock Compression of Condensed Matter, Baltimore, MD, United States, Jul 31 - Aug 05, 2005

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  • Report No.: UCRL-PROC-213380
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 878224
  • Archival Resource Key: ark:/67531/metadc880283

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  • June 22, 2005

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  • Sept. 21, 2016, 2:29 a.m.

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  • April 13, 2017, 6:31 p.m.

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Liu, B T; Lomov, I & Glenn, L A. Numerical Modeling of Mixing and Venting from Explosions in Underground Chambers, article, June 22, 2005; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc880283/: accessed June 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.