Diffusion coefficient for gaseous mixture (Chapman-Enskog theory)

Formula

Diffusion coefficient for gaseous mixture (Chapman-Enskog theory) formula
D
the diffusion coefficient for gaseous mixture
M1
molar mass for gas 1
M2
molar mass for gas 2
sigma12
the average collision diameter
T
temperature
p
pressure
Omega
temperature-dependent collision integral

Formula description

The dependence of the diffusion coefficient on temperature for gases can be expressed using the Chapman-Enskog theory, which presents accurate formulas for a multicomponent gas mixture under thermal and chemical equilibrium.

Calculator (how to use calculator?)

Diffusion coefficient for gaseous mixture (Chapman-Enskog theory) formula
M1
M2
sigma12
T
p
Omega
D
Precision

Formula code

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References

  1. Wikipedia: the diffusion coefficient for gaseous mixture.

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