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

AI Thread Summary
Fluid moves from a low-pressure area in a Venturi to a high-pressure area downstream due to the principles of fluid dynamics and acceleration. In a Venturi, the fluid accelerates as it passes through the narrow section, creating a low-pressure zone. This acceleration is driven by the conservation of energy, where the increase in kinetic energy results in a decrease in pressure. As the fluid exits into a larger diameter pipe, it decelerates, leading to an increase in pressure despite the initial low-pressure region. Understanding these dynamics clarifies how fluid can transition from low to high pressure in a Venturi system.
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Homework Statement


How does fluid move from low pressure area in a Venturi to a high pressure area, which is downstream from the Venturi.

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