<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by DengKao:
<strong>What I do know is this.
Take a bottle of what ever beverage, open it and hold it up side down. The fluid comes out slow and "un- organized" so to speak. wink
But if you take the bottle and just before holding it completely up side down you give it a "twist", you get this tornade like swirl inside the bottle and the fluid comes out quick, fast and pretty "organized" wink </strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">Do a test tho' - does this ACTUALLY speed up the emptying of the bottle, or just look like it?
Any student can tell you this technique is the true secret to downing a yard of ale with minimum mess and therefore in the fastest possible time. wink wink
It is only relevant of course, when you have 2-way flow with different materials.
An air intake is a 1 way process, filling a vacuum, so the analogy would not seem relevant