Loss of head at submerged discharge

AI Thread Summary
The discussion clarifies that the author refers to the negligible velocity of inflowing water in the tank, indicating it becomes stilled due to mixing with the tank water. The velocity term (v^2)/2g in the equation pertains to the inlet velocity in the pipe. The stilled condition is attributed to the viscosity of water, which allows for momentum sharing between the inflow and the tank water. This understanding is crucial for analyzing submerged discharge and head loss. Overall, the interaction between inflow and tank water dynamics is essential for accurate calculations.
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Homework Statement


in the notes , author said that the velocity within it is negligible? does the author mean the water velocity in the tank ?
so the velocity (v^2)/2g in the 4.24 means the velocity in the pipe ?

Homework Equations

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foo9008 said:
in the notes , author said that the velocity within it is negligible? does the author mean the water velocity in the tank ?
so the velocity (v^2)/2g in the 4.24 means the velocity in the pipe ?
Yes, the author means that the inflowing water effectively becomes stilled by the water in the tank.
And yes, as the diagram shows, v is the inlet velocity.
 
haruspex said:
Yes, the author means that the inflowing water effectively becomes stilled by the water in the tank.
And yes, as the diagram shows, v is the inlet velocity.
why the water will become ' stilled' ?
 
foo9008 said:
why the water will become ' stilled' ?
Water has some viscosity. It becomes mixed with the water in the tank, sharing its momentum.
 
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