Chemical, civil, and mechanical engineers must often determine the power require

Question

Chemical, civil, and mechanical engineers must often determine the power required to pump a fluid through a series of pipes. To do so, we must first determine a friction factor. If the fluid flow is turbulent and the pipes are smooth, the friction factor can be determined as 11.23 1.1513/JF=ln (Re 17/2.5 1 ) In this equation f represents the friction factor, a positive value that does not exceed 0.1, and Re represents the Reynolds number, which is a function of the fluid properties, the pipe diameter, and the nominal fluid velocity. The Reynolds number increases with increasing fluid velocity The flow becomes turbulent at higher velocities, when the Reynolds number exceeds approximately 3000. Hence the above equation is valid only when Re exceeds 3000. Determine the values of the friction factor corresponding to Reynolds numbers of 5000, 12,000, and 20,000. Does the friction factor increase or decrease as the Reynolds number increases?

Explanation / Answer

Link to excel file

https://drive.google.com/file/d/0Byr5t30kJhKZa245MGw1eWtGTmc/view?usp=sharing

I have used a recursive formula in Excel click on cell B4 to find out the formula. If you need further help just comment below.

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