Quote:
Originally Posted by aerohead
I see where you're going,but I believe that without an 'enclosed system' which a venturi is dependent upon,there is nothing present( as the wall of a carburetor) in the local flow environment to 'force' the acceleration around or under.
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i should have stated that as a general description, not a literal term(for example, standing between 2 building will cause you to experience an increased wind velocity but technically isn't a venturi since it's not enclosed). reduce the area for the fluid to flow through and you will increase it's velocity, and reduce it's pressure, likely that piece on the back wouldn't do very much of that since it's no in contact with the ground and therefore doesn't fully enclose the air path underneath, but it is close