lewis number calculator
enter the value and click "calculate", the calculation result will be displayed.
what is the lewis number?
the lewis number is a comparison of the relative sizes of the thermal boundary layer and the concentration boundary layer. this means that if we have conjugate mass and heat transfer, it will tell how the fluid will behave.
the lewis number is often described as "le". or "nle". it is the ratio between thermal diffusivity and mass diffusivity. it is dimensionless, meaning it is unitless.
these numbers can provide us with a convenient way to characterize the problem when there are multiple coupled transport mechanisms.
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