Verification Case 76
PRODUCT: AFT Fathom (with SSL Module)
TITLE: FthVerify76.fth
REFERENCE: Wilson, Addie, Sellgren & Clift, Slurry Transport Using Centrifugal Pumps 3rd Edition, 2006, Publisher Springer, Pages 117-118, Case Study 5.1
FLUID: Water/Sand
ASSUMPTIONS: Water temperature is assumed to be 20 deg. C. Other than the pipe diameter, the system configuration is not given (i.e. pressures, pipe length, etc) and were assumed. These assumptions do not affect the final results of the problem. Use the Minimal slurry calculation method. Assume the sliding friction coefficient is 0.4.
RESULTS:
Wilson, Addie, Sellgren & Clift Results:
| Case | Velocity (meters/sec) | Settling Velocity (meters/sec) |
| D = 0.60 m | 6.17 | 4.65 |
| D = 0.55 m | 7.35 | 4.45 |
| D = 0.65 m | 5.26 | 4.84 |
AFT Fathom Results:
| Case | Velocity (meters/sec) | Settling Velocity (meters/sec) |
| D = 0.60 m | 6.18 | 4.65 |
| D = 0.55 m | 7.36 | 4.45 |
| D = 0.65 m | 5.27 | 4.84 |
DISCUSSION:
The results from AFT Fathom match the results from Wilson, Addie, Sellgren & Clift very closely. It should be noted that the settling velocities for the 0.55 m and 0.65 m pipe diameter cases are assumed to be misprinted in the reference as 5.45 m/s and 5.84 m/s, because these cases should "bound" the 0.60 m case.
