Calculate the channel conveyance.
conveyance(n, A, R, Cm)Manning's roughness coefficient (dimensionless).
Flow area [\(L^2\)].
Hydraulic radius [\(L\)].
Unit conversion coefficient for Manning's equation. For SI units, Cm = 1.
The channel conveyance.
Channel conveyance is routinely calculated in numerical solutions of steady, gradually-varied and unsteady flows. This function is used extensively by internal procedures and is made accessible to the user for convenience.