Effect of Resolution on Propagating Detonation Wave

Menikoff, Ralph

doi:10.2172/1136940

Title: Effect of Resolution on Propagating Detonation Wave

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Abstract

Simulations of the cylinder test are used to illustrate the effect of mesh resolution on a propagating detonation wave. For this study we use the xRage code with the SURF burn model for PBX 9501. The adaptive mesh capability of xRage is used to vary the resolution of the reaction zone. We focus on two key properties: the detonation speed and the cylinder wall velocity. The latter is related to the release isentrope behind the detonation wave. As the reaction zone is refined (2 to 15 cells for cell size of 62 to 8μm), both the detonation speed and final wall velocity change by a small amount; less than 1 per cent. The detonation speed decreases with coarser resolution. Even when the reaction zone is grossly under-resolved (cell size twice the reaction-zone width of the burn model) the wall velocity is within a per cent and the detonation speed is low by only 2 per cent.

Authors:

Menikoff, Ralph ^[1]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Publication Date:: Thu Jul 10 00:00:00 EDT 2014

Research Org.:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1136940

Report Number(s):: LA-UR-14-25140

DOE Contract Number:: AC52-06NA25396

Resource Type:: Technical Report

Country of Publication:: United States

Language:: English

Subject:: 97 MATHEMATICS AND COMPUTING; DETONATION WAVE; PBX 9501; SURF MODEL

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                    Menikoff, Ralph. Effect of Resolution on Propagating Detonation Wave.  United States: N. p., 2014. 
        Web.  doi:10.2172/1136940.

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                    Menikoff, Ralph. Effect of Resolution on Propagating Detonation Wave.  United States.  https://doi.org/10.2172/1136940

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                    Menikoff, Ralph. 2014.  
        "Effect of Resolution on Propagating Detonation Wave".  United States.  https://doi.org/10.2172/1136940.  https://www.osti.gov/servlets/purl/1136940.

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@article{osti_1136940,

  title        = {Effect of Resolution on Propagating Detonation Wave},

  author       = {Menikoff, Ralph},

  abstractNote = {Simulations of the cylinder test are used to illustrate the effect of mesh resolution on a propagating detonation wave. For this study we use the xRage code with the SURF burn model for PBX 9501. The adaptive mesh capability of xRage is used to vary the resolution of the reaction zone. We focus on two key properties: the detonation speed and the cylinder wall velocity. The latter is related to the release isentrope behind the detonation wave. As the reaction zone is refined (2 to 15 cells for cell size of 62 to 8μm), both the detonation speed and final wall velocity change by a small amount; less than 1 per cent. The detonation speed decreases with coarser resolution. Even when the reaction zone is grossly under-resolved (cell size twice the reaction-zone width of the burn model) the wall velocity is within a per cent and the detonation speed is low by only 2 per cent.},

  doi          = {10.2172/1136940},

  url          = {https://www.osti.gov/biblio/1136940},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Thu Jul 10 00:00:00 EDT 2014},

  month        = {Thu Jul 10 00:00:00 EDT 2014}

}

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