Hydro schemes and reactive flow in 1-d and 2-d

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The behavior of the implementation of Craig Tarver's reactive flow model for high explosives in a hydro code is investigated. The model produces the correct shock propagation rates. The effects of geometry, zoning and artificial viscosity are compared in one (1D) and two (2D) dimensions. Sensitivities to the solution scheme of the hydro equations are also investigated. A comparison with an experimentally verified, analytic theory is presented for the speed of spherically diverging reactive flow fronts. We show that for LX-14 the reactive flow results obey that theory and a lag of about 1.5 to 2.0 mm is produced in ... continued below

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Morgan, D L & Sinz, K June 30, 1998.

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Description

The behavior of the implementation of Craig Tarver's reactive flow model for high explosives in a hydro code is investigated. The model produces the correct shock propagation rates. The effects of geometry, zoning and artificial viscosity are compared in one (1D) and two (2D) dimensions. Sensitivities to the solution scheme of the hydro equations are also investigated. A comparison with an experimentally verified, analytic theory is presented for the speed of spherically diverging reactive flow fronts. We show that for LX-14 the reactive flow results obey that theory and a lag of about 1.5 to 2.0 mm is produced in a spherical system in about 5 cm of travel from the origin compared to programmed burn. Reactive flow is shown to produce a more strongly developed Mach stem than does conventional, programmed lighting assisted by beta burn. The reactive flow results appear to be close to convergence for zone sizes of 1/16 mm. Several numerical anomalies in code/model behavior are shown and their limited effects are discussed. Some one-dimensional results for LX-17 are also briefly discussed.

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  • Other: DE00003636
  • Report No.: UCRL-ID-131619
  • Grant Number: W-7405-Eng-48
  • DOI: 10.2172/3636 | External Link
  • Office of Scientific & Technical Information Report Number: 3636
  • Archival Resource Key: ark:/67531/metadc682443

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  • June 30, 1998

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • May 6, 2016, 11:20 p.m.

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Morgan, D L & Sinz, K. Hydro schemes and reactive flow in 1-d and 2-d, report, June 30, 1998; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc682443/: accessed September 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.