Capillary number
Input(s)
\(\mu_{w}\): Viscosity of Displacing Fluid \((\mathrm{cP})\)
V: Characteristic Velocity (ft/D)
\(\sigma_{o w}\): Surface or Interfacial Tension of Oil and Water Phases \((\mathrm{dyn} / \mathrm{cm})\)
Output(s)
\(\mathrm{N}_{\mathrm{c}}\): Capillary Number (dimensionless)
Formula(s)
\[
N c=\frac{\mu_{w} * V}{\sigma_{o w}}
\]
Reference(s)
Wikipedia.org.