Estimation of diffusivity of liquids

Input(s)

B\emptyset_{\boldsymbol{B}}: Association Number (dimensionless)

T\mathrm{T}: Temperature (K)(\mathrm{K}) MB\boldsymbol{M}_{\boldsymbol{B}}: Molar Weight (g/gmol)(\mathrm{g} / \mathrm{g} \mathrm{mol})

μ\mu: Viscosity (cP)

VA\boldsymbol{V}_{\boldsymbol{A}}: Molar Volume (cm3/gmol)\left(\mathrm{cm}^{3} / \mathrm{g} \mathrm{mol}\right)

Output(s)

DAB\boldsymbol{D}_{\boldsymbol{A} \boldsymbol{B}}: Diffusivity (cm2/s)\left(\mathrm{cm}^{2} / \mathrm{s}\right)

Formula(s)

DAB=0.000000074((BMB)0.5) Tμ( VA0.6)\mathrm{D}_{\mathrm{AB}}=0.000000074 * \frac{\left(\left(\emptyset_{\mathrm{B}} * \mathrm{M}_{\mathrm{B}}\right)^{0.5}\right) * \mathrm{~T}}{\mu *\left(\mathrm{~V}_{\mathrm{A}}^{0.6}\right)}

Reference(s)

Bird, R.B., Stewart, W.E. and Lightfoot, E.N. (2002). Transport Phenomena (Second Ed.). John Wiley & Sons, Chapter: 17, Page: 530.


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