HYDRODYNAMIC LOADING OF CERAMIC COMPONENTS DUE TO ELECTRICAL DISCHARGE IN WATER
For one kind of high-current electron accelerators based on water pulse forming line (PFL) and ceramic sealed vacuum diode, the mechanical stability of the water-vacuum interface should be taken into account during operation. One threat derives from the shockwaves initiated by water breakdown in the PFL. In this paper, the water shock due to electrical discharge was numerically and experimentally investigated. By combining empirical formulae for plasma driven water shock theory with a underwater explosive approach,finite element models were set up to simulate the shockwave pervasion sequence. The pressure-time history and mechanical response to pressure waves were also obtained. In order to get the pressure profile, the arc pressure test including point-plane electrode system was carried out based on a 10-stage Marx generator.Peak pressure of water shock was measured by the sensor and related results have a close approximation to the predictions. The relationship between shockwaves and discharge energy was also obtained in the experiments.
Tao Xun Jian-de Zhang Jing-ming Gao Yan-song Zhao
College of Optoelectric Science and Engineering,National University of Defense Technology,Changsha 410073,China
国际会议
17th International Conference on High-Power Particle Beams(第17届高功率离子束国际会议)
西安
英文
553-556
2008-07-06（万方平台首次上网日期，不代表论文的发表时间）