SF6气体间隙开关激光触发延迟的数值模拟
Numerical simulation of laser triggered SF6 gap switch delay modeling
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摘要: 建立了激光触发SF6气体间隙开关的0维数值模型，数值计算结果与国内外实验进行了比较，计算的延迟时间与实验结果符合较好。在充气压力一定时，延迟时间随激光能量、工作电压比的增加而减小，并且延迟时间-工作电压比的曲线斜率也是随激光能量和工作电压比的增加而减小的。当激光能量一定时，延迟时间随充气压力的减小和电压的增加而减小, 并且不同充气压力的延迟时间随电压变化的曲线斜率是随电压的增加而减小的。但是，等电压压力比值情况下,延迟时间是随充气压力的增加而减小的。Abstract: A 0-dimension model of laser triggered SF6 gap switch is established and the numerical results compared with a series of experimental data presented by Woodworth and Li hong-tao in the paper. The calculated delay is in agreement with the experimental one. When gas pressure is constant, delay decreases with the increase of laser energy and percent of self-breakdown voltage(SBV). The slope of the curve of delay vs percent of SBV for different laser energy also decreases with the increase of laser energy and percent of SBV. When laser energy is constant, delay decreases with the decrease of pressure and the increase of voltage, and the curve slope of delay vs voltage for different pressure decreases with the increase of voltage. The delay decreases as pressure increases for constant V/p.
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Key words:
- laser trigger /
- sf6 gas /
- gas switch /
- delay /
- closed time
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