Instability of liquid
dielectrics surface, being developing after the action of an alternating
current corona discharge pulse, has been experimentally investigated. Voltage
amplitude on the corona electrode reaches 70 kV, frequency is 17 MHz, and pulse
duration is 0.5-1 μs. This is similar to
rose-window instability at electrode height above the liquid surface > 5-10 mm. At lesser heights,
development of a singular crater is observed with turbulization of its walls surrounded
by radially divergent wrinkles on the surface. In this case, instability shape
is similar to an oculus. Maximum effect is demonstrated by oils with high
specific electric resistance.
Cite this paper
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