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Fluid flow pressure drop problem

2018-03-16View Original

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Newbie seeking help: When calculating the pressure drop due to fluid flow in a channel, according to the Fanning formula given in textbooks, ΔP = λl/d(ρu^2)/2. However, I have seen some examples where ΔP is given as 4λl/d(ρu^2)/2. What’s going on here?
Reply #22018-03-19
The friction coefficient should be selected based on the Reynolds number range. Take a look at books on chemical engineering principles specifically.

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