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The Venturi Effect cannot explain how an eductor works
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[QUOTE="jack action, post: 6308254, member: 240508"] It is assumed that the pressure somewhere upstream the venturi, is the same as the air outside, i.e ambient pressure. Therefore, the pressure in the venturi throat has to be lower than ambient pressure. Having two different fluids doesn't change anything. If you can define a pressure at some point (say, the venturi throat), for one fluid, then this pressure is the same for another fluid at the same point. For example, on the top of the ocean, the air pressure over it is 15 psi because there is 15 lb of air per squared inch on top of the water. The pressure on the water is also 15 psi at that point. I think the answer from [USER=646488]@Dullard[/USER] is clear when he talks about energy conservation. It is not just about accelerating the fluid, it is about accelerating the fluid [I]without[/I] any energy input. [/QUOTE]
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The Venturi Effect cannot explain how an eductor works
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