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Logistic fit

The input line for the Logistic fit model takes the following form:

*Relative permeability = Logistic-fit
k^w_min, k^a_min, chi, zeta

The material parameters are given in the following:

  • \(k^{\beta}_{min}\) is the minimum relative permeability of pore water (\(\beta = w\)) and pore air (\(\beta = a\)), respectively.
  • \(\chi\) and \(\zeta\) are curve fitting parameters.