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Determining if a pipe is running full or is at its sealing flowrate?

How can one determine if a pipe is running full or is at its sealing flowrate?

The following equation gives a quick check to determine the sealing velocity for a pipe:

Q = 10.2 D^2.5

Q is the liquid flowrate in gallons per minute
D is the pipe diameter in inches

If the current flowrate in the pipe is less than the value calculated for Q above, then the pipe is below its sealing flowrate or is said to be partially flooded. In order to calculate the velocity in this pipe you must use a set of flow area equation presented in Chemical Engineering magazine (March 1998, p. 129). The above equation is valid for liquid flow through a horizontal pipe.

Adopted from http://www.cheresources.com/chexpress/chexpress28.shtml

posted by Kipas Repair JB @ 7:47 PM,


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I’m Zaki. I used to be a project, process and chemical engineer. Few years ago I successfully became a Chartered Engineer (IChemE) and Professional Engineer (BEM). I'm now employed as a chemical engineering educator/researcher/consultant. Hope you like reading my blog. I welcome any feedback from you. My email: zaki.yz[alias]gmail.com. TQ!

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