Comparison of microsecond and nanosecond underwater electrical discharges initiated by an electrically exploding wire
Comparison of microsecond and nanosecond underwater electrical discharges initiated by an electrically exploding wire
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发表时间：
2004-07
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通讯作者：
A. Grinenko;A. Sayapin;S. Efimov;V. T. Gurovitch;Y. Krasik
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作者：
A. Grinenko;A. Sayapin;S. Efimov;V. T. Gurovitch;Y. Krasik
本文比较了电爆炸丝（直径0.1- 0.5mm，长度30-85 mm）在水下引发微秒级（幅值≤100 kA，上升时间≤3 μs）和纳秒级（幅值≤60 kA，上升时间≤80 ns）放电的情况。放电通道（DC）和产生的冲击波（SW）的参数进行了研究，通过不同的电探针，光学和时间分辨光谱诊断。结果表明，信号处理是必要的重建正确的压力波形从信号获得的压电传感器。结果表明，在微秒和纳秒时间尺度下，超临界流体直流边界处的压力分别不超过4×108 Pa和20×108 Pa。提出了一种导线引发UED在水中产生SW的模型。我们比较了模型的结果与由条纹相机监测的SW的轨迹。
A comparison of microsecond (≤100 kA in amplitude and ≤3 μs in rise time) and nanosecond (≤60 kA in amplitude and ≤80 ns in rise time) underwater electrical discharges (WED) initiated by electrically exploding wire (Cu wire 0.1-0.5 mm in diameter and 30-85 mm in length) is presented. Parameters of the discharge channel (DC) and generated shock waves (SW) were studied by different electrical probes, optical and time resolved spectroscopy diagnostics. It was shown that the signal processing is necessary for reconstruction of correct pressure waveforms from signals obtained by the piezoelectric gauges. It was found that in the microsecond and nanosecond time scales of the UED pressure at the boundary of the DC does not exceed 4×108 Pa and 20×108 Pa, respectively. A model of SW generation in water by the wire initiated UED is presented. We compare the model results with the trace of the SW which is monitored by a streak camera.