TEMPERATURE-BASED REACTIVE FLOW MODEL FOR ANFO.
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.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 808343
- Report Number(s):
- LA-UR-02-3676; TRN: US200312%%269
- Resource Relation:
- Conference: 12TH INTERNATIONAL DETONATION SYMPOSIUM, SAN DIEGO, CA (US), 08/11/2002--08/16/2002; Other Information: PBD: 12 Jun 2002
- Country of Publication:
- United States
- Language:
- English
Similar Records
Experimental observations of detonation in ammonium-nitrate-fuel-oil (ANFO) surrounded by a high-sound speed, shockless, aluminum confiner
Detonation shock dynamics calibration for non-ideal HE: ANFO