# Sherwood Number

Written by Jerry Ratzlaff on . Posted in Dimensionless Numbers

Sherwood number, abbreviated as Sh, a dimensionless number, is the ratio between convective mass transfer and diffusive mass transfer.

## Sherwood Number formulas

$$\large{ Sh = \frac{ K \; l_c }{ D } }$$

$$\large{ Sh = \frac{ K }{ \frac{ D }{ l_c } } }$$

Symbol English Metric
$$\large{ Sh }$$ = Sherwood number $$\large{dimensionless}$$
$$\large{ l_c }$$ = characteristic length $$\large{ft}$$ $$\large{m}$$
$$\large{ D }$$ = diffusion coefficient $$\large{\frac{ft^2}{sec}}$$ $$\large{\frac{m^2}{s}}$$
$$\large{ K }$$ = mass transfer coefficient $$\large{dimensionless}$$

Tags: Mass Equations