My problem is practical - I have a boat that has a cabinet in it which has a persistent epoxy smell from recent work, causing all clothing stored in the cabinet to also smell of epoxy. So it needs to be ventilated. Inspired by carburetors, I was thinking of running a tube from inside this cabinet out the window of the boat, where there is typically wind - in the hopes that this wind would suck air out of the tube the same way fuel gets sucked up through the jet of a carburetor, thereby ventilating the cabinet [Editor's note, the cabinet is NOT airtight].
Then thinking about it more, I realized this requires that in some cases (if wind is blowing from left-to-right, as in diagram) the wind would actually have to be travelling in a loop - which seems somehow unnatural, so I'm not sure if it would actually work. It might actually cause air to flow from the cabinet into the cabin and make the whole cabin smell of epoxy.
Can anyone who understands something about fluid dynamics comment on whether this scheme makes any sense? Does it only work when air flows right-to-left? In general, in a passive system like this with no moving parts, is it possible to drive fluid in a loop?