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Cylinder test for determining JWL parameters • Livermore cylinder test on OFHC Copper for reaction products EOS of explosives : • Cylindrical test (adapted for spherical situations ?) • Experimental data is fitted by 2D code. • Does not take into account the ZND peak pressure. • Does not take into account the post-detonation combustion. • Does not take into account the grain size effects. • Does not take into account the non detonated matter. • Does not take into account turbulences and instabilities. • The validity domain is reduced. 2011 European HyperWorks Technology Conference, 7-9 November, Bonn 6 300 mm 15.24 mm explosive D 12.7 mm u(t)
Numerical simulation of high explosive detonation using JWL in a rod • Axisym. rod (1D), Eulerian square mesh with 1 elm, TNT (Dobratz 1985) BCS/110 DETPOIN • The analytical PCJ calculated by the EOS JWL, using Dobratz parameters is 199 kBar. • The Radioss computed peak pressure reaches 194.8 kBar (for H/L=8). � -2.2% of relative error with 5000 elts. • The D CJ velocity is well reproduced (err
Page 1 and 2: Numerical simulation of air blast w
Page 3 and 4: • Problem : Blast wave in air wit
Page 5: Numerical simulation of the TNT det
Page 9 and 10: Detonation of spherical charge of 1
Page 11 and 12: Detonation of Spherical charge of 1
Page 13 and 14: Numerical simulation of blast wave
Page 15 and 16: Overpressure (Bar) Comparison with
Page 17 and 18: duration of positive phase (µs) Co
Page 19 and 20: Cylindrical charge • Radioss is i
Page 21 and 22: Experiments vs Simulations 2011 Eur
Page 23 and 24: • Considere real gas in Radioss.
Page 25 and 26: About detonations • Detonation :
Page 27: ΔP I 0 s� About blast waves •

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