Pressure pulses generated by wire-guided discharges in water

Tools

Chai, Yifan and Timoshkin, Igor and Given, Martin and MacGregor, Scott (2025) Pressure pulses generated by wire-guided discharges in water. IET High Voltage. ISSN 2397-7264 (In Press)

[thumbnail of Chai-etal-IETHV-2026-Pressure-pulses-generated-by-wire-guided-discharges] Text. Filename: Chai-etal-IETHV-2026-Pressure-pulses-generated-by-wire-guided-discharges.pdf
Accepted Author Manuscript
Restricted to Repository staff only until 1 January 2099.
Download (853kB) | Request a copy

Abstract

The hydrodynamic characteristics of underwater wire-guided discharges and their relationships with the wire length and pulsed circuit parameters are not fully understood. In this paper wire guided discharges using wires of length 3, 5 and 7 cm and diameter of 0.05 mm have been investigated. The energy available to the discharges was 162.3 J at a voltage of 35 kV. The magnitude of the pressure pulses produced has been characterized through the deformation of copper disks located between 4 and 9 cm from the initiating wire. In this region the peak pressure was observed to decrease with distance faster than predicted by the ideal cases of spherical or cylindrical pressure waves. The peak pressure 4 cm away from the discharge was up to ~45 MPa and was dependent on the wire length. The energy partition during the discharges has been analyzed based on recorded current waveforms, calculated resistive voltage across wire across wire and constant plasma channel resistance.

ORCID iDs

Chai, Yifan ORCID logoORCID: https://orcid.org/0009-0000-9681-4620, Timoshkin, Igor ORCID logoORCID: https://orcid.org/0000-0002-0380-9003, Given, Martin ORCID logoORCID: https://orcid.org/0000-0002-6354-2486 and MacGregor, Scott ORCID logoORCID: https://orcid.org/0000-0002-8810-1716;
CORE (COnnecting REpositories)