# Chezy Formula

Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

Chezy formula, abbreviated as Ch, applies to the steady velocity with turbulent flow in a open channel.

## Chezy formula

$$\large{ v = C \; \sqrt{ r_h \; m } }$$
Symbol English Metric
$$\large{ v }$$ = flow velocity $$\large{\frac{ft}{sec}}$$ $$\large{\frac{m}{s}}$$
$$\large{ C }$$ = Chezy coefficient $$\large{dimensionless}$$
$$\large{ r_h }$$ = hydraulic radius $$\large{\frac{rotation}{sec}}$$ $$\large{\frac{rotation}{s}}$$
$$\large{ m }$$ = slope $$\large{ft}$$ $$\large{m}$$