Interpretation: The amount of polyethylene oxide to be added to water to increase its flow rate is to be calculated.
Concept introduction: Friction factor commonly known as the fanning friction factor is a measure in turbulent flow and is the ratio of shear stress to the product of the density and velocity head. It is given as,
In the above formula, the notations used are,
The above formula can be written as,
Z is the total head developed
L is the length of the tube
D is the diameter of the tube
The Reynolds number for the fluid is given as,
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Unit Operations of Chemical Engineering
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