Abstract
UDC 537.528
DOI https://doi.org/10.52577/eom.2021.57.2.15
he paper presents the results of experimental studies of a pressure wave generated by an underwater electric discharge which was initiated by a thin-layer conductor – a fishing line with a thin outer layer of copper. Experimental studies were carried out in two modes, the parameters of which provided a short and ф long type of discharge. The results showed that a fishing line with a thin outer layer of copper is a promising method for initiating an underwater electric discharge. Its use allows to reduce the time of the pre-breakdown stage and pre-breakdown losses, to stabilize the process of an electric discharge in space, and to increase the efficiency of the electric discharge effect. It is noted that in the case of a short-term type of discharge, a pressure wave is generated, the amplitude of which is comparable to the pressure wave upon initiation of a thin solid copper conductor, and a two-fold increase of the amplitude of the generated pressure wave with increasing the fishing line length from 20 to 50 mm in an exponential manner is observed. Studies have also shown that a fishing line with a thin copper outer coating has good resistance to the impact factors of an underwater electric explosion.
Keywords: electrical wire explosion, underwater spark discharge, pressure wave amplitude, inter-electrode gap, initiation of electrical discharge, thin-layer conductor.