Fine Tuning the CJ Detonation Speed of a High Explosive products Equation of State

2017 ◽  
Author(s):  
Ralph Menikoff
Keyword(s):  
Equation Of State ◽  
High Explosive ◽  
Fine Tuning ◽  
Detonation Speed

scholarly journals DARK ENERGY, WITH SIGNATURES

2010 ◽  
Vol 19 (14) ◽  
pp. 2325-2330
Author(s):  
SOURISH DUTTA ◽  
ROBERT J. SCHERRER ◽  
STEPHEN D. H. HSU
Keyword(s):  
Dark Energy ◽  
Equation Of State ◽  
Energy Scale ◽  
Fine Tuning ◽  
Time Dependent ◽  
Late Time ◽  
Particle Content ◽  
Energy Field ◽  
Energy Models ◽  
New Energy

We propose a class of simple dark energy models which predict a late-time dark radiation component and a distinctive time-dependent equation of state w(z) for redshift z < 3. The dark energy field can be coupled strongly enough to standard model particles to be detected in colliders, and the model requires only modest additional particle content and little or no fine-tuning other than a new energy scale of order milli-electron volts.

Implementation of a High Explosive Equation of State into an Eulerian Hydrocode

2004 ◽  
Author(s):  
David L. Littlefield
Keyword(s):  
Equation Of State ◽  
High Explosive

scholarly journals Equation of state formulation for unreacted solid high explosive PETN

2017 ◽  
Author(s):  
K. Nagayama ◽  
S. Kubota
Keyword(s):  
Equation Of State ◽  
High Explosive

Exploring the Uncertainty in the Equation of State for a High Explosive Fit to Heterogeneous Data

2019 ◽  
Author(s):  
Stephen A. Andrews ◽  
Andrew M. Fraser ◽  
Scott I. Jackson ◽  
Eric K. Anderson
Keyword(s):  
Equation Of State ◽  
Functional Form ◽  
High Explosive ◽  
Heterogeneous Data ◽  
Calibration Data ◽  
Detonation Products ◽  
Single Experiment ◽  
Calibration Experiment ◽  
Free Parameters ◽  
Physics Model

Abstract The extreme pressures and temperatures of the gas produced by detonating a High Explosive (HE) make it difficult to use experimental measurements to estimate the Equation Of State (EOS), the physics model that relates pressure, temperature, and density of the gas. Instead of measuring pressure directly one measures effects like the acceleration of metals driven by the HE. Typically one fits a few free parameters in a fixed functional form to measurements from a single experiment. The present work uses the optimization tool F_UNCLE to incorporate data from multiple experiments into a single EOS model for the gas produced by detonating the explosive PBX 9501. The model is verified by comparison to an experiment from outside the set of calibration data. The uncertainty in the EOS is also is examined to determine how each calibration experiment constrains the model and how the uncertainty arising from all calibration experiments affects predictions. This work identifies an EOS for HE detonation products and uncertainty about the EOS.

scholarly journals ENTROPY OF CONTRACTING UNIVERSE IN CYCLIC COSMOLOGY

2008 ◽  
Vol 23 (01) ◽  
pp. 33-36 ◽  
Author(s):  
LAURIS BAUM ◽  
PAUL H. FRAMPTON
Keyword(s):  
Dark Energy ◽  
Equation Of State ◽  
Lower Bound ◽  
Single Photon ◽  
Fine Tuning ◽  
Recent Proposal ◽  
Model Based ◽  
Cyclic Model ◽  
Phantom Dark Energy ◽  
The Universe

Following up a recent proposal1 for a cyclic model based on phantom dark energy, we examine the content of the contracting universe (cu) and its entropy S cu . We find that beyond dark energy, the universe contains on average zero or an unlikely single photon which if present immediately after turnaround would have infinitesimal energy that blue shifts eventually to produce e+e- pairs. These statements are independent of the equation of state ω = p/ρ of dark energy provided ω < -1. Thus S cu = 0 and if observations confirm ω < -1, the entropy problem is solved. We discuss the absence of a theoretical lower bound on ϕ = |ω+1|, then describe an anthropic fine tuning argument that renders unlikely extremely small ϕ. The present bound ϕ ≲ 0.1 already implies a time until turnaround of (tT - t0) ≳ 100 Gy.

Magpie: Reliable High Explosive Equation of State

2018 ◽  
Author(s):  
Christopher Ticknor ◽  
Jeffery Allen
Keyword(s):  
Equation Of State ◽  
High Explosive

Fine-Tuning Futures

ASHA Leader ◽  
2017 ◽  
Vol 22 (6) ◽  
Author(s):  
Christi Miller
Keyword(s):  
Fine Tuning

Equation of state for hard convex body fluid mixtures

1998 ◽  
Vol 94 (5) ◽  
pp. 809-814 ◽  
Author(s):  
C. BARRIO ◽  
J.R. SOLANA
Keyword(s):  
Equation Of State ◽  
Convex Body ◽  
Body Fluid ◽  
Fluid Mixtures
Sign in / Sign up

Export Citation Format

Share Document