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  • Open Daily: 10am - 10pm
    Alley-side Pickup: 10am - 7pm

    3038 Hennepin Ave Minneapolis, MN
    612-822-4611

Open Daily: 10am - 10pm | Alley-side Pickup: 10am - 7pm
3038 Hennepin Ave Minneapolis, MN
612-822-4611
Shock Wave Dynamics of Novel Aluminized Detonations and Empirical Model for Temperature Evolution From Post-Detonation Combustion Fireballs

Shock Wave Dynamics of Novel Aluminized Detonations and Empirical Model for Temperature Evolution From Post-Detonation Combustion Fireballs

Gordon, J.

Paperback

Technology & EngineeringChemistryPhysics

ISBN10: 1025123271
ISBN13: 9781025123271
Publisher: Hutson Street Press
Published: May 22 2025
Pages: 158
Weight: 0.51
Height: 0.34 Width: 6.14 Depth: 9.21
Language: English

This research characterizes the blast wave and temperature evolution of an explosion fireball in order to improve the classification of aluminized conventional munitions based on a single explosive type such as RDX. A drag model fit to data shows initial shock velocities of 1.6-2.8 km/s and maximum fireball radii ranging from 4.3-5.8 m with most of the radii reached by 50 ms upon detonation. The Sedov-Taylor point blast model is fitted to data where a constant release (s=1) of energy upon detonation suggests shock energies of 0.5-8.9 MJ with blast dimensionalities indicative of the spherical geometry (n 3) observed in visible imagery. An inverse correlation exists between blast wave energy and overall aluminum content in the test articles. Using a radiative cooling term and a secondary combustion term, a physics-based empirical model is able to reduce 82 data points to five fit parameters to describe post-detonation combustion fireballs. The fit-derived heat of combustion has a 96% correlation with the calculated heat of combustion but has a slope of 0.49 suggesting that only half of the theoretical heat of combustion is realized. Initial temperature is not a good discriminator of detonation events but heat of combustion holds promise as a potential variable for event classification.

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