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Venturi, how does fluid go from low P tube to high P tube

  1. Jan 30, 2015 #1
    1. The problem statement, all variables and given/known data
    How does fluid move from low pressure area in a Venturi to a high pressure area, which is downstream from the Venturi.

    2. Relevant equations

    3. The attempt at a solution
    Not understanding the mechanism here, as I thought fluids only go from high pressure to low presure. Since the Venturi creates a section of low pressure, how does the fluid move to a high pressure area, which is the section of pipe where it has a larger diameter.
  2. jcsd
  3. Jan 30, 2015 #2


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    Hello and welcome to PF!

    Think about the direction of the acceleration of the fluid in the region you are considering.
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