All the calculated results show that: the code LS3D can be used for calculatingthe detonation wave propagation in different explosive initiated by different way. Itcan deal with different shape, multi-medium explosive.
The lean detonation limits for propylene epoxide spray in air, for hexa ne spray in air and for decane spray in air are determined respectively to be 0.47(4.23% fuel by mass); 0.75(5.29% fuel by mass); 0.89(5.8% fuel by mass).
The improved WCA equation and Ross's variatio nal perturbation theory are used for the equation of state of detonation products, a nd the detonation properties of H_ 32.685 N_ 16.8430 O_ 3.0 and H_ 8.15 4 N_ 4.5770 O_ 3.0 explosives have been calculated. The calculated detonation velocity, pressure and temperature at CJ point are in good agreement with experimental data.
In this paper,the concepts,the historical background,the importance and current application of scientific computing and visualization of scientific computing are introduced and the visualization of computational detonation mechanics is specially expounded.
The continual action time of plus pressure during cloud detonation of mixed ternary fuel containing aluminum powder,propylene oxide and TNT reaches magnitude of 10 ms and is about 100 times than TNT charge′s.
All the calculated results show that: the code LS3D can be used for calculatingthe detonation wave propagation in different explosive initiated by different way. Itcan deal with different shape, multi-medium explosive.
An evaluation formula of the detonation wave pressure in the system of laser, energy transferring-medium and sheet metal is built according to the theory of detonation wave and blasting gas-dynamics.
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multicycle pulse detonation engine (PDE) model, and liquid fuel (gasoline) was used.
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The average of pressure peak, as measured by piezoelectricity pressure transducer, increased versus distance to thrust wall before fully-developed detonation came into being.
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According to the pressure history, the pressure in detonation tube would not rise abruptly until the flame front advanced a certain distance downstream the spark.
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One was enforced by combustion and became detonation rapidly.