Finding the Darcy-Weisbach Friction Factor with Limited Info

AI Thread Summary
To find the Darcy-Weisbach friction factor using the Moody diagram, the Reynolds number (Re) is essential, but the user lacks sufficient information. The provided data includes the roughness (K), diameter (D), and flow rate (Q), but not the fluid type or properties. The formula for Re requires density and dynamic viscosity, which are fluid-specific. Assuming fully developed turbulent flow may be necessary to proceed. Additional details about the fluid are crucial for accurate calculations.
ben49
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Homework Statement


I need to find the Darcy Weibach friction factor from the moody diagram but i cannot find reynolds number?

All the information i have is K = 0.02mm D = 150mm Q=100 l/s

The only formula for RE i found is RE = (density) x (velocity) x (diameter of pipe) / (dynamic viscocity)

Im really stuck.

Any help would be much appreciated.

Thanks

Ben


Homework Equations





The Attempt at a Solution

 
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Did the problem statement tell you what the fluid is (e.g oil, water)?
 
No it didnt?
 
You may need to assume fully developed turbulent flow then. What is the pipe material (e.g. steel, PVC)?
 
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