TEMPERATURE-BASED REACTIVE FLOW MODEL FOR ANFO.

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Reaction rates depend on temperature as well as on the mechanical state. In shock wave initiation, experimental data almost always comprise mechanical measurements such as shock speed, material speed, compression, and pressure, and are accordingly modeled in terms of these parameters. Omission of temperature is one reason why mechanically based reaction rates do not extrapolate well out with the range of states used to normalize them. The model presented addresses chemical processes directly, enabling chemical kinetic data reported in terms of temperature (and at STP, generally) to be used in shock reaction models. We have recently extended a temperature-based model ... continued below

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374 Kilobytes pages

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MULFORD, ROBERTA & SWIFT, DAMIAN C June 12, 2002.

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Reaction rates depend on temperature as well as on the mechanical state. In shock wave initiation, experimental data almost always comprise mechanical measurements such as shock speed, material speed, compression, and pressure, and are accordingly modeled in terms of these parameters. Omission of temperature is one reason why mechanically based reaction rates do not extrapolate well out with the range of states used to normalize them. The model presented addresses chemical processes directly, enabling chemical kinetic data reported in terms of temperature (and at STP, generally) to be used in shock reaction models. We have recently extended a temperature-based model for use with ANFO-type formulations. Reactive material is treated as a heterogeneous mixture of components, each of which has its own model for response to dynamic loading (equation of state, strength model, reactions.) A finite-rate equilibration model is used to determine the overall response of the mixture to dynamic loading. In this model of ANFO, the ammonium nitrate and the fuel oil are treated as separate components in the unreacted mixture.

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374 Kilobytes pages

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  • 12TH INTERNATIONAL DETONATION SYMPOSIUM, SAN DIEGO, CA (US), 08/11/2002--08/16/2002

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  • Report No.: LA-UR-02-3676
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 808343
  • Archival Resource Key: ark:/67531/metadc734680

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  • June 12, 2002

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  • Oct. 18, 2015, 6:40 p.m.

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  • March 24, 2016, 2:40 p.m.

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MULFORD, ROBERTA & SWIFT, DAMIAN C. TEMPERATURE-BASED REACTIVE FLOW MODEL FOR ANFO., article, June 12, 2002; New Mexico. (digital.library.unt.edu/ark:/67531/metadc734680/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.