Verification Case 22

View Model     Problem Statement

PRODUCT: AFT Fathom

TITLE: FthVerify22.fth

REFERENCE: Igor Karassik, William Krutzsch, Warren Fraser, Joseph Messina, Pump Handbook, 2nd Ed., 1986, McGraw-Hill, Page 8.61-62, Example 13

FLUID: Oil

ASSUMPTIONS: N/A

RESULTS:

Parameter	Handbook	AFT Fathom
Head loss (feet)	98.34	98.58

DISCUSSION:

The viscosity was not provided, so the friction factors determined in the handbook were used directly for pipes 1 and 2. In addition, a loss factor for the 1 ½ inch gate valve was not in the AFT Fathom library, so was entered in pipe 2 as a separate loss factor on the Fittings & Losses tab.

The head loss is given in the Junction Deltas table at the top of the Output window. The junction delta was setup in the Output Control window. Or it can be calculated by adding up the pipe head losses.

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