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Schmidt Number

Compare momentum diffusivity against species diffusivity.

visual calculatorDimensionless Numbers

Read the flow shape before trusting the number.

This page turns a CFD setup into regime, scale, and dominant-effect cues. Adjust the calculator below and compare the moving graphic with the computed result.

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Schmidtspecies transportmass transfer
formula
KaTeX rendered
Sc = nu / D\begin{aligned}\text{Sc = nu / D}\end{aligned}
ASCII sourceSc = nu / D
Sc
0.7500
interpretation
mass diffusion faster than momentum

Gas mixing often lives near Sc ≈ 1, while liquid-phase mass transfer can reach much larger values.