Schoenherr ATTC Friction Line
Alternative friction-resistance correlation (Schoenherr 1932 / ATTC) used by some model basins instead of ITTC-57. Implicit equation solved via Newton iteration.
Cf (Schoenherr)
0.001672 -
Formula, assumptions, and limits
Implicit form - Newton-Raphson solved inline. Schoenherr is ~2 % lower than ITTC-57 at typical ship Re, which matters for model-to-ship correlation if the tank uses different conventions.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| Reynolds number | - | input | |
| Frictional resistance coefficient | - | result |