# Chezy Coefficient

on . Posted in Fluid Dynamics

Chezy coefficient, abbreviated as C, a dimensionless number, dependent on surface roughness and the hydraulic mean depth.

## Chezy coefficient formula

$$\large{ C = \frac{1}{n} \; r_h^{1/6} }$$
Symbol English Metric
$$\large{ C }$$ = Chezy coefficient $$\large{ dimensionless }$$
$$\large{ r_h }$$ = hydraulic radius $$\large{ ft }$$ $$\large{ m }$$
$$\large{ n }$$ = roughness coefficient $$\large{ dimensionless }$$