Lewis Number Calculator

Calculate Lewis Number



Formula

The formula to calculate the Lewis Number (Le) is:

\[ Le = \frac{a}{Dc} \]

Where:

What is the Lewis Number?

The Lewis Number (Le) is a dimensionless number that characterizes the ratio of thermal diffusivity to mass diffusivity. It is used in heat and mass transfer processes to describe the relative rates of thermal and mass diffusion.

Example Calculation

Let's consider an example:

Using the formula to calculate the Lewis Number:

\[ Le = \frac{0.01}{0.005} = 2 \]

This means that the Lewis Number is 2.