Pipe Flow Q: Frictional Head Loss in Tank?

AI Thread Summary
The discussion centers on the confusion regarding the treatment of a tank's fluid flow as a pipe flow problem. The original solution applies pipe flow equations, raising questions about the neglect of frictional head loss due to the tank walls. It is argued that the fluid velocity from the tank's depth decrease is minimal, making frictional losses negligible. The participants express skepticism about categorizing the scenario as a pipe flow issue. Overall, the conversation highlights the complexities of applying pipe flow principles to tank scenarios.
theBEAST
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Homework Statement


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This is in the pipe flow section and the solution treats this question like a pipe. Here is the solution:
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As you can see I circled the pipe flow equations in red. If this is the case shouldn't there be frictional head loss, hf, caused by the walls of the tank? I don't understand there solution.
 
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The velocity of the fluid caused by the decrease in depth as the reservoir empties is so small that any frictional head loss can be neglected.
 
SteamKing said:
The velocity of the fluid caused by the decrease in depth as the reservoir empties is so small that any frictional head loss can be neglected.

How is the question even a pipe though :O
 
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