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.