View Model     Problem Statement

PRODUCT: AFT Fathom

TITLE: FthVerify50.fth

REFERENCE: William S. Janna, Introduction to Fluid Mechanics, 1983, PWS Publishers, Page 166-167, Example 5.3

FLUID: Water at 22 deg. C

ASSUMPTIONS: N/A

RESULTS:

Parameter	John & Haberman	AFT Fathom
Head loss in pipe (meters)	0.744	0.759
Pressure drop in pipe (kPa)	7.279	7.434

DISCUSSION:

Results disagree slightly because Janna reads friction factors from a chart, which is less accurate than AFT Fathom's correlation based method. The friction factor was determined to be 0.022 by Janna, and AFT Fathom calculated it as 0.02244 based on the Colebrook-White method, which is 2% higher.

Note this model uses fluid properties from the AFT Standard fluid library. The AFT Standard fluid library was updated in AFT Fathom 12, thus the AFT Fathom results will be slightly different for this verification case when compared to previous versions of AFT Fathom.

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