Estimation of self diffusivity at high density

Input(s)

a: Concentration (gmolcmcm3)\left(\mathrm{g} \mathrm{mol}^{\mathrm{cm}} \mathrm{cm}^{3}\right)

Daa: Prediction of Self-Diffusivity (gmol/cms)(\mathrm{g} \mathrm{mol} / \mathrm{cm} \mathrm{s})

cDaa r_{\boldsymbol{r}}: Reduced Diffusivity ( gmol/cms\mathrm{g} \mathrm{mol} / \mathrm{cm} \mathrm{s} )

Output(s)

cDaac\boldsymbol{c D a a}_{\boldsymbol{c}}: Critical Diffusivity (gmol/cms)(\mathrm{g} \mathrm{mol} / \mathrm{cm} \mathrm{s})

CDaa: Prediction of Self-Diffusivity (gmol/cms)(\mathrm{g} \mathrm{mol} / \mathrm{cm} \mathrm{s})

Formula(s)

cDaac=c Daa cDaarCDaa=(cDaac)(cDaar)\begin{aligned} & \mathrm{cDaa}_{\mathrm{c}}=\frac{\mathrm{c} * \text { Daa }}{\mathrm{cDaa}_{\mathrm{r}}} \\ & \mathrm{CDaa}=\left(\mathrm{cDaa}_{\mathrm{c}}\right) *\left(\mathrm{cDaa}_{\mathrm{r}}\right) \end{aligned}

Reference(s)

Bird, R.B., Stewart, W.E. and Lightfoot, E.N. (2002). Transport Phenomena (Second Ed.). John Wiley & Sons, Chapter: 17, Page: 523.


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