High Voltage Forum
Pulse power => Capacitor Banks => Topic started by: MRMILSTAR on November 25, 2021, 04:48:10 PM
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Has anyone done any experiments or demos using a capacitor bank to "explode" water? I want to use my pulsed power generator to do this. I'm hoping to use a few teaspoons of water to blast a large hole in a piece of 3/4 inch plywood as a demo.
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Hi Steve,
Sounds interesting and well fun of course! Creative destruction 😁
I have not seen anything like this personally, but I have not really looked either.
I have not too long ago have aquired a couple of large caps to experiment with eventually.
Got several other projects first. Someday.
Related to water/instant explosive steam, which actually does amaze me, even though I basically understand it...I am going to attach a few pictures of a pretty big Cottonwood tree that was struck several years ago not too far from where I live. Great example of instant explosive steam and the powerful lightning strike.
https://photos.app.goo.gl/bMsMhh6cnGEDHJe87
Chris Reeland
Ladd Illinois USA
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Steve
we used to do this to generate very big compression waves in sea water for geotectonic sonar
used 500uF charged to to 15kV and two electrodes about half a meter apart about 100 meters down in the sea. water got ionised between electrodes
resulting bang then gave us a look at the underlying strata on the sea floor (oil exploration). Repetition rate about 10 hz
triggered spark gap fired the charge down the coax cables to the electrodes.
Used to test it in the university carpark in a trough of sea water --better than any buyable fire cracker - needed very good ear protection to get near
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I've been mulling several ideas for a vessel to hold the small quantity of water. One idea is to bore a small hole (~1 inch diameter) into a solid block of G10. The block would be built up by using epoxy to join several sheets of 0.5 inch G10 together. One electrode would enter through the bottom center. The other electrode would be an annular piece of brass surrounding the cylinder somewhere towards the center of the cylinder.