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Shockwave generation by electrical explosion of cylindrical wire arrays in hydrogen peroxide/water solutions
- Source :
- Applied Physics Letters. 116:243702
- Publication Year :
- 2020
- Publisher :
- AIP Publishing, 2020.
-
Abstract
- We report the results of experiments investigating the implosion of a shock generated by the electrical explosion of a cylindrical aluminum wire array immersed in a >80% hydrogen peroxide/water solution. This solution was chosen as an additional energy source to the supplied electrical energy to generate the imploding flow with higher velocity. The experiments were conducted using a generator with the stored energy of ∼4.8 kJ, delivering to the array a ≤280 kA current rising during ∼1 μs. The backlighted images of the imploding shocks were recorded using a streak camera. Using different diameter wires, the explosion of arrays, characterized by critically damped and under-damped discharges, was studied. The experiments revealed that an array explosion in a 92% H2O2/H2O solution results in the second strong shock generated after the peak of the deposited electrical power, a solid indication of H2O2 detonation. This second shock converges ∼40% faster than the first strong shock generated by the wire explosion. One-dimensional hydrodynamic simulations of the shock convergence in H2O2/H2O solutions support this proposition.
- Subjects :
- 010302 applied physics
Materials science
Physics and Astronomy (miscellaneous)
Streak camera
Electric potential energy
Detonation
Implosion
02 engineering and technology
Mechanics
021001 nanoscience & nanotechnology
01 natural sciences
Shock (mechanics)
Generator (circuit theory)
0103 physical sciences
Current (fluid)
0210 nano-technology
Energy source
Subjects
Details
- ISSN :
- 10773118 and 00036951
- Volume :
- 116
- Database :
- OpenAIRE
- Journal :
- Applied Physics Letters
- Accession number :
- edsair.doi...........a3b3c656e2d0a512c8ee0a56625dc266
- Full Text :
- https://doi.org/10.1063/5.0011226