Science and Technology of Energetic Materials

Vol.73, No.4 (2012)

Research paper

Underwater shock wave induced bubble explosions in water and silicone oil
Kazutaka Kitagawa, Fumihiro Ishiguro, Atsushi Abe and Yasue Tanaka


Underwater shock wave passing through water and silicone oils is investigated in experimentally and numerically. The present work was conducted to study overpressure history, oscillation cycle and visualization of the collapsing gas bubble in visco-elastic fluids. The gas bubble size and repeated cycle strongly depend on the fluid kinetic viscosity, charge depth and sonic speed in medium. ⊿Pmax in silicone oils decrease to about 41 ~ 47% of water value. Numerical results simulate well the experimental ones in bubble motion and jet in a downward flow.

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underwater shock wave, shock propagation in visco-elastic fluids, suppression of shock waves, environmental problem

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