1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Hot-spot contributions in shocked high explosives from mesoscale ignition models
Rent:
Rent this article for
USD
10.1063/1.4811233
/content/aip/journal/jap/113/23/10.1063/1.4811233
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/23/10.1063/1.4811233

Figures

Image of FIG. 1.
FIG. 1.

Initial conditions and boundary constraints of the pore collapse simulation.

Image of FIG. 2.
FIG. 2.

Evolving pore collapse ( ) under a passing shock (25 GPa) at different times, (here at the shock arrives at the pore) (a) −0.01 ns, (b) 0.02 ns, (c) 0.06 ns, and (d) 0.1 ns.

Image of FIG. 3.
FIG. 3.

Remapped two dimensional temperature fields of the maximum temperatures after pore collapse versus radial coordinate for pore size across analyzed shock pressures. Each shock pressure produces a different density of 2.575 g/cm for , 2.779 g/cm for , and 2.926 g/cm for

Image of FIG. 4.
FIG. 4.

Remapped two dimensional temperature fields of the maximum temperature realized just after the shock leaves the pore and that pore becomes fully collapsed for a shock pressure, .

Image of FIG. 5.
FIG. 5.

Remapped two dimensional temperature fields of the maximum temperature realized just after the shock leaves the pore and that pore becomes fully collapsed for a shock pressure .

Image of FIG. 6.
FIG. 6.

Remapped two dimensional temperature fields of the maximum temperature realized just after the shock leaves the pore and that pore becomes fully collapsed for a shock pressure .

Image of FIG. 7.
FIG. 7.

Radial burn model initial conditions with remapped 2D temperature field from the collapse model of a pore under a 36 GPa shock.

Image of FIG. 8.
FIG. 8.

A burning simulation of a hot spot created from a pore subjected to a shock after 2 ns showing the flame front position as a fraction of TATB in the element.

Image of FIG. 9.
FIG. 9.

The concentration of chemical species across the flame in Fig. 8 derived from a pore subjected to a shock after 2 ns. “Other” denotes the total of all species not graphed independently.

Image of FIG. 10.
FIG. 10.

Comparison of flame speeds for the same temperature distribution over different sized regimes.

Image of FIG. 11.
FIG. 11.

Flame velocity versus time (ns) across pressure and initial pore radii ( ) for .

Image of FIG. 12.
FIG. 12.

Flame velocity versus time (ns) across pressure and initial pore radii ( ) for .

Image of FIG. 13.
FIG. 13.

Flame velocity versus time (ns) across pressure and initial pore radii ( ) for .

Image of FIG. 14.
FIG. 14.

Volume of burned mass/initial pore volume as a function of time (ns).

Image of FIG. 15.
FIG. 15.

Critical spherical hot spot radius in micrometers versus the temperature of the surrounding material, where the hot spot is originally at 2200 K in the interior, from selected hot spot theories.

Image of FIG. 16.
FIG. 16.

The initial pore size in TATB, initially at ambient conditions, that creates a critical hot spot versus show pressure (right axis and in black) or post-shock temperature (left axis).

Image of FIG. 17.
FIG. 17.

Radial flame speed data from the DAC experiments and from radial burning simulations (this work).

Tables

Generic image for table
Table I.

Empirical polynomial coefficients for .

Generic image for table
Table II.

Arrhenius decomposition kinetics for TATB in the form , where is the activation temperature.

Generic image for table
Table III.

Table of values chosen for the calculations in Fig. 15 .

Loading

Article metrics loading...

/content/aip/journal/jap/113/23/10.1063/1.4811233
2013-06-21
2014-04-20
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Hot-spot contributions in shocked high explosives from mesoscale ignition models
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/23/10.1063/1.4811233
10.1063/1.4811233
SEARCH_EXPAND_ITEM