Blast wave effects at short distances
The peak shock overpressures for a blast wave have been calculated by several methods, and the results have been verified by a large number of experimental measurements. The use of the standard overpressure curve, however, may lead to serious underestimation of blast wave effects at very short distances (probably at scaled distances of less than one meter). We have calculated the blast wave from a detonating sphere of explosive using the one-dimensional reactive hydrodynamics code HYDROX, and have obtained good agreement with the standard curve. To describe the interaction of the blast wave with a flat plate, the calculation was also done with the two-dimensional code 2DE (with a much coarser mesh). The air shock matches into the plate at the predicted pressure, but a second, stronger shock is then produced by the arrival of the detonation products. The strength of the second shock decays more rapidly with distance than the first (air) shock. This effect has been verified experimentally. 7 refs., 6 figs.
- Research Organization:
- Los Alamos National Lab., NM (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6806844
- Report Number(s):
- LA-UR-87-130; CONF-8602112-1; ON: DE87005107
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
450100* -- Military Technology
Weaponry
& National Defense-- Chemical Explosions & Explosives
BLAST EFFECTS
CALCULATION METHODS
CHEMICAL EXPLOSIVES
DETONATIONS
EXPLOSIVES
FLUID MECHANICS
HYDRODYNAMICS
MECHANICS
ONE-DIMENSIONAL CALCULATIONS
SHOCK WAVES
TWO-DIMENSIONAL CALCULATIONS