Correction factor for facial tension (De Nouy ring method)

Input(s)

\(R\): Radius of the Ring \((\mathrm{cm})\)

\(r\): Radius of the Ring String \((\mathrm{cm})\)

\(S\): Apparent Facial/Interfacial Tension (dyn/cm)

D: Specific Gravity of Lower Phase \(\left(\mathrm{g} / \mathrm{cm}^{3}\right)\)

\(d\): Specific Gravity of Upper Phase \(\left(\mathrm{g} / \mathrm{cm}^{3}\right)\)

\(l\): Perimeter of the Ring \((\mathrm{cm})\)

Output(s)

C: Correction Factor (dimensionless)

Formula(s)

\[ \mathrm{C}=0.7250+\sqrt{\frac{0.01452 \cdot \mathrm{S}}{\mathrm{I}^{2}(\mathrm{D}-\mathrm{d})}+0.04534-\frac{1.679 \cdot \mathrm{r}}{\mathrm{R}}} \]

Reference(s)

Mihcakan, I.M., Alkan, K.H., Ugur, Z., Petroleum and Natural Gas Laboratory, Course Notes, I-Fluid Properties, ITU, Petroleum and Natural Gas Engineering, Istanbul, Turkey, 2001. Page: 4-4.


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