Kinetic information from detonation front curvature

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The time constants for time-dependent modeling may be estimated from reaction zone lengths, which are obtained from two sources One is detonation front curvature, where the edge lag is close to being a direct measure The other is the Size Effect, where the detonation velocity decreases with decreasing radius as energy is lost to the cylinder edge A simple theory that interlocks the two effects is given A differential equation for energy flow in the front is used, the front is described by quadratic and sixth-power radius terms The quadratic curvature comes from a constant power source of energy moving ... continued below

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10 p.

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Souers, P. C., LLNL June 15, 1998.

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Description

The time constants for time-dependent modeling may be estimated from reaction zone lengths, which are obtained from two sources One is detonation front curvature, where the edge lag is close to being a direct measure The other is the Size Effect, where the detonation velocity decreases with decreasing radius as energy is lost to the cylinder edge A simple theory that interlocks the two effects is given A differential equation for energy flow in the front is used, the front is described by quadratic and sixth-power radius terms The quadratic curvature comes from a constant power source of energy moving sideways to the walls Near the walls, the this energy rises to the total energy of detonation and produces the sixth-power term The presence of defects acting on a short reaction zone can eliminate the quadratic part while leaving the wall portion of the cuvature A collection of TNT data shows that the reaction zone increases with both the radius and the void fraction

Physical Description

10 p.

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OSTI as DE98058693

Other: FDE: PDF; PL:

Source

  • 11. detonation symposium, Snowmass, CO (United States), 31 Aug - 4 Sep 1998

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  • Other: DE98058693
  • Report No.: UCRL-JC--127554
  • Report No.: CONF-980803--
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 300046
  • Archival Resource Key: ark:/67531/metadc686886

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  • June 15, 1998

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • April 6, 2017, 6:27 p.m.

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Souers, P. C., LLNL. Kinetic information from detonation front curvature, article, June 15, 1998; California. (digital.library.unt.edu/ark:/67531/metadc686886/: accessed September 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.