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Effects of Ambient Pressure on Bubble Characteristics
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LU Xin-Pei;LIU Ming-Hai;JIANG Zhong-He;PAN Yuan |
Institute of Electrical and Electronic Engineering, Huazhong
University of Science and Technology, Wuhan 430074
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Cite this article: |
LU Xin-Pei, LIU Ming-Hai, JIANG Zhong-He et al 2002 Chin. Phys. Lett. 19 704-706 |
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Abstract The effects of the ambient pressure Pambient on the characteristics of bubble of pulsed discharge in water are investigated. The simulation results show that, when Pambient increases from 1atm to 100 atm, the bubble radius R decreases from 4 cm to 7 mm, and its pulsation period decreases from 8 ms to 0.2 ms. The results also show that the peak pressure of the first shock wave is independent of Pambient, but the peak pressure of the second shock wave caused by the bubble reexpansion decreases when Pambient increases. On the other hand, the larger the ambient pressure, the larger the peak pressure of the plasma in the bubble, while the plasma temperature is independent of Pambient.
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Keywords:
52.80.Wq
52.80.Mg
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Published: 01 May 2002
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PACS: |
52.80.Wq
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(Discharge in liquids and solids)
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52.80.Mg
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(Arcs; sparks; lightning; atmospheric electricity)
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