Line data    Source code

       1             : //* This file is part of the MOOSE framework
       2             : //* https://mooseframework.inl.gov
       3             : //*
       4             : //* All rights reserved, see COPYRIGHT for full restrictions
       5             : //* https://github.com/idaholab/moose/blob/master/COPYRIGHT
       6             : //*
       7             : //* Licensed under LGPL 2.1, please see LICENSE for details
       8             : //* https://www.gnu.org/licenses/lgpl-2.1.html
       9             : 
      10             : #include "PorousFlowRogersStallybrassClements.h"
      11             : 
      12             : namespace PorousFlowRogersStallybrassClements
      13             : {
      14             : Real
      15     2297774 : effectiveSaturation(Real pc, Real shift, Real scale)
      16             : {
      17     2297774 :   Real x = (pc - shift) / scale;
      18     2297774 :   Real ex = std::exp(x);
      19     2297774 :   return std::pow(1.0 + ex, -0.5);
      20             : }
      21             : 
      22             : Real
      23     2276974 : dEffectiveSaturation(Real pc, Real shift, Real scale)
      24             : {
      25     2276974 :   Real x = (pc - shift) / scale;
      26     2276974 :   Real ex = std::exp(x);
      27     2276974 :   return -0.5 * ex * std::pow(1.0 + ex, -1.5) / scale;
      28             : }
      29             : 
      30             : Real
      31     1137638 : d2EffectiveSaturation(Real pc, Real shift, Real scale)
      32             : {
      33     1137638 :   Real x = (pc - shift) / scale;
      34     1137638 :   Real ex = std::exp(x);
      35     1137638 :   return (0.75 * ex * ex * std::pow(1.0 + ex, -2.5) - 0.5 * ex * std::pow(1.0 + ex, -1.5)) / scale /
      36     1137638 :          scale;
      37             : }
      38             : }