Abstract
This paper reports an experimental investigation on the effects of explosion depth and tube width on the water jet induced by an underwater electrical discharge in a narrow rectangular tube. The water jet formation and bubble structure were evaluated from the images recorded by a high-speed video camera. Two typical patterns of jet formation and four general patterns of bubble implosion were observed, depending on the explosion depth and tube width. The velocity of the water jet was calculated from the recorded images. The jet velocity was observed to depend on not only the explosion depth and energy, but also on the tube width. We proposed an empirical formula defining the water jet velocity in the tube as a function of the tube width and explosion depth and energy.
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Communicated by H. Kleine and A. Higgins.
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Koita, T., Zhu, Y. & Sun, M. Experimental study of the water jet induced by underwater electrical discharge in a narrow rectangular tube. Shock Waves 27, 257–270 (2017). https://doi.org/10.1007/s00193-016-0654-z
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DOI: https://doi.org/10.1007/s00193-016-0654-z