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Results for “Detonators”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Effects of Microstructure and Binder on the Shock-to-Detonation Behavior of Hexanitrostilbene (HNS).
Abstract not provided.
Effects of non thermal reactivity on wedge induced oblique detonation waves.
Abstract not provided.
Characterization of Post-Detonation Fireballs at 1 MHz via LAS Measurements of Temperature, Pressure, CO and CO2.
Abstract not provided.
Extinction and Laser-Induced Incandescence Imaging of Carbon Soot in Post-Detonation Fireballs.
Abstract not provided.
The effects of microstructure on detonation wave spreading in nanoparticle TATB.
Abstract not provided.
Near-MHz Temperature and H2O Measurements in Large-Scale Post-Detonation Fireballs .
Abstract not provided.
Routine Beryllium-10 analysis from post-detonation debris and geologic materials [Slides]
Beryllium (Be) isotope measurements provide insight into weapon design, yield, etc. Sample preparation nor measurement capability currently existed at LANL. Potential capability directly benefits nuclear forensics venture. PI Goehring has nearly 20 years of Be chemistry experience, including method implementation with difficult samples.
Generating Skeletal Chemical Reaction Mechanisms for Post-Detonation Flows
This report documents the generation of a skeletal chemical reaction mechanism for use with hemispherical pentaerythritol tetranitrate charges. Skeletal mechanisms can substantially reduce computation time while maintaining accuracy. The methodology within uses faster running sample simulations to build a representative thermodynamic state space. These thermodynamic states are used with a constant-volume reactor analysis and a reaction flow analysis to remove unimportant species and reactions from a full chemical reaction mechanism. For the given test case, this results in a 6x speedup in computation time for directly comparable simulations in 2D axisymmetric simulations. We see a 30x speedup in simulations in 3D Cartesian coordainates when compared to a prior full kinetics simulation. There is strong agreement between temperature and species mass fraction profiles between the full and skeletal chemical reaction mechanisms. These methodologies can be applied to any explosive, given the availability of sample simulations.
Mesoscale Simulations on the Effects of Rate-Dependent Strength and the Shock-to-Detonation Behavior of Explosive Materials
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Advancements in Post-Detonation Fireball Modeling and Experimental Validation
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Predicting EBW Detonator Failure Using DSC Data
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Hydrocode Modeling of Detonation Failure in Vapor-Deposited Explosive Films with Explicit 3D Interfacial Roughness
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PuF4 Dissolution and Analysis: Pre-detonation Nuclear Forensics Perspective
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Examining Overdriven State Predictions via Mach Stem Detonation Interactions using XHVRB
Documents a study to examine model behavior as compared to open literature data on overdriven states in explosives
Effect of Aging and Geometry on Detonation in a CL-20 Based Plastic Bonded Explosive Formulation
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Physics-Driven Modeling of Detonation Soot Nascency and Growth
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