Science and Technology of Energetic Materials

Vol.81, No.1 (2020)


Experimental investigation of blast wave pressure mitigation by water droplets interaction
Takahiro Tamba, Yuta Sugiyama, Kiyonobu Ohtani, and Kunihiko Wakabayashi


An experimental investigation was conducted in an explosion pit to mitigate blast wave propagation by the interaction with water droplets. Composition C-4 (8.00±0.01 g) was used as the explosive with No. 6 detonators. Water droplets were supplied around the explosives using a sprinkler having holes with a diameter of 1.0 mm. Pressure waveforms of the blast waves were measured using pressure transducers, while controlling the water flow rate and the area sprinkled with the water droplets. This study revealed that the sprinkled area affected the effectiveness of the mitigation of the peak overpressure. Larger pressure mitigation was observed when a smaller area was sprinkled with water for equivalent total masses of water applied. This indicated that the spatial density of the water droplets was an important factor for the mitigation of the blast waves.

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blast wave, shock wave, water droplets, pressure mitigation

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