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Calculations

Wilke's multicomponent equation

Default

Input data

Table

Diffusivity of A in N

Molar fraction of N

.

Molar fraction of A in the mixture

Output data

Diffusivity coefficient of A in the mixture

Description

Calculate the diffusivity of a component in a gas mixture using Wilke's equation:

D_{A,M} = \frac{1}{\sum{\frac{Y'_N}{D_{A, N}}}}

Y_N' = \frac{y_N}{1 - y_A}

Where:

$D_{A,N}$ : Gas diffusivity of $A$ in the $N$ -th component of the mixture;
$y_N$ : Molar fraction of $N$ in the mixture;

Description

Calculate the diffusivity of a component in a gas mixture using Wilke's equation:

D_{A,M} = \frac{1}{\sum{\frac{Y'_N}{D_{A, N}}}}

Y_N' = \frac{y_N}{1 - y_A}

Where:

$D_{A,N}$ : Gas diffusivity of $A$ in the $N$ -th component of the mixture;
$y_N$ : Molar fraction of $N$ in the mixture;

References

WELTY, James; WICKS, Charles E.; WILSON, Robert E.; RORRER, Gregory L. Fundamentals of Momentum, Heat and Mass Transfer. 5th Ed. John Wiley & Sons, 2008.