Which Point Has the Lowest Pressure in a Fluid System?

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SUMMARY

The discussion centers on fluid dynamics, specifically analyzing pressure points within a fluid system. The user queries whether the inlet pressure (VB) equals the exit velocity (VE) due to constant tube diameter and whether points PC or PE exhibit the lowest pressure. The consensus indicates that pressure at point PE is lower than at PB, and PD is not necessarily zero. The assumptions regarding stationary fluid motion and pressure differences are confirmed as valid considerations in this context.

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Homework Statement



t8rxub.jpg


Let's say the surface of the fluid is very big as compare to the tube diameter.
Are my assumptions below correct?

VA=0

VB(inlet of the tube) = VE, i think so because the diameter of the tube is constant.
And the velocity through the tube all are constant.

or VB(inlet of the tube) = 0? but it could be right?

Which point has the lowest pressure? should be PC or PE?

Are the pressure of PB and PE the same?

Is the PD = 0?

will all the pressure be different value if the fluid in a stationary motion?

thanks all.
 
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