Cyclone question

[Einhander Sn0m4n]

Is it possible to make a cyclone with central air pressure approaching hard vacuum?

[Chardok]

Is it possible to make a cyclone with central air pressure approaching hard vacuum?

Doesn't seem possible. I can't explain it precisely, but when I picture the mechanism in my mind, and I think of what I know to be the mechanics of a hurricane, I see the pressure being so low that the eyewall collapses, and the surrounding air rushes in to fill the void. It would not be able to perpetuate the cyclonic effect at all, unless it were spinning ridiculously fast, to balance out the extremely low pressure with gobs of centrifugal force, in which case it would be generating so much heat that the water in the atmosphere would simply boil away and there would be nothing to keep the convective engine going.

unless it were very, very small I think....

[Einhander Sn0m4n]

Anyone else? I wasn't necessarily talking about a natural cyclone, just any old cyclone, natural or cooked-up by us hairless monkeys...

[Lord of the Abyss]

At a guess, I'd think the air molecules on the inside of a vortex would "evaporate" right into the vacuum zone. Random molecular motion would see to that, unless the vortex was spinning even faster than the molecules bounce.

Also, any air above and below the vortex would be sucked right in. Unless you cap the top and bottom of the vortex, I don't see it working.