Manning open channel flow rate Replace the sample data with

symbols, variables and units

v: m/s; R_h: m; S: energy slope; SI lower n: s/m⅓.

applicable conditions and boundaries

Empirical formula for stable and uniform open channel flow; n needs to be calibrated according to channel conditions.

formula source code

The following is a copyable LaTeX expression.

v=\frac1n R_h^{2/3}S^{1/2}

Reference and Extended Learning

is organized according to model definition and assumptions. Please check actual conditions and original literature before engineering, research and clinical use.