GeochemistryActivityCoefficientsDebyeHuckelTest.C

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//* This file is part of the MOOSE framework
//* https://mooseframework.inl.gov
//*
//* All rights reserved, see COPYRIGHT for full restrictions
//* https://github.com/idaholab/moose/blob/master/COPYRIGHT
//*
//* Licensed under LGPL 2.1, please see LICENSE for details
//* https://www.gnu.org/licenses/lgpl-2.1.html
 
#include "gtest/gtest.h"
 
#include "GeochemistryActivityCoefficientsDebyeHuckel.h"
#include "GeochemistryActivityCalculators.h"
 
const GeochemicalDatabaseReader database("database/moose_testdb.json", true, true, false);
// The following system has secondary species: (O-phth)--, CO2(aq), CO3--, CaCO3, CaOH+, OH-,
// >(s)FeO-, Calcite, seq_radius_neg1
const PertinentGeochemicalSystem
    model(database,
          {"H2O", "H+", "HCO3-", "O2(aq)", "Ca++", ">(s)FeOH", "radius_neg1", "radius_neg1.5"},
          {"Calcite"},
          {},
          {"Calcite_asdf"},
          {"CH4(aq)"},
          {">(s)FeOCa+"},
          "O2(aq)",
          "e-");
const ModelGeochemicalDatabase mgd = model.modelGeochemicalDatabase();
 
TEST(GeochemistryActivityCoefficientsDebyeHuckelTest, notDH)
{
  const GeochemicalDatabaseReader database_notDH(
      "database/faultydbs/notDH.json", true, true, false);
  GeochemistryIonicStrength is(1.0E9, 2.0E9, false, false);
  try
  {
    GeochemistryActivityCoefficientsDebyeHuckel ac_notDH(is, database_notDH);
    FAIL() << "Missing expected exception.";
  }
  catch (const std::exception & e)
  {
    std::string msg(e.what());
    ASSERT_TRUE(msg.find("Attempted to get Debye-Huckel activity parameters but the activity model "
                         "is NOTdebye-huckel") != std::string::npos)
        << "Failed with unexpected error message: " << msg;
  }
}
 
TEST(GeochemistryActivityCoefficientsDebyeHuckelTest, noNeutral)
{
  const GeochemicalDatabaseReader database_noNeutral(
      "database/faultydbs/missing_DH.json", true, true, false);
  GeochemistryIonicStrength is(1.0E9, 2.0E9, false, false);
  GeochemistryActivityCoefficientsDebyeHuckel ac_noNeutral(is, database_noNeutral);
  ac_noNeutral.setInternalParameters(
      25.0, mgd, std::vector<Real>(8, 1.0), std::vector<Real>(9), std::vector<Real>(3));
  const DebyeHuckelParameters dh = ac_noNeutral.getDebyeHuckel();
 
  EXPECT_EQ(dh.A, 0.5555);
  EXPECT_EQ(dh.B, 0.3333);
  EXPECT_EQ(dh.Bdot, 0.0444);
  EXPECT_EQ(dh.a_water, 0.0);
  EXPECT_EQ(dh.b_water, 0.0);
  EXPECT_EQ(dh.c_water, 0.0);
  EXPECT_EQ(dh.d_water, 0.0);
  EXPECT_EQ(dh.a_neutral, 0.0);
  EXPECT_EQ(dh.b_neutral, 0.0);
  EXPECT_EQ(dh.c_neutral, 0.0);
  EXPECT_EQ(dh.d_neutral, 0.0);
}
 
TEST(GeochemistryActivityCoefficientsDebyeHuckelTest, ionicStrengthInterface)
{
  GeochemistryIonicStrength is(1.0E9, 2.0E9, false, false);
  GeochemistryActivityCoefficientsDebyeHuckel ac(is, database);
 
  is.setUseOnlyBasisMolality(true);
  is.setMaxStoichiometricIonicStrength(2.0E-8);
 
  Real gold_ionic_str = 0.0;
  std::vector<Real> basis_m(8);
  basis_m[mgd.basis_species_index.at("H2O")] = 1.0;
  basis_m[mgd.basis_species_index.at("H+")] = 2.0;
  gold_ionic_str += 2.0;
  basis_m[mgd.basis_species_index.at("HCO3-")] = 3.0;
  gold_ionic_str += 3.0;
  basis_m[mgd.basis_species_index.at("O2(aq)")] = 4.0;
  basis_m[mgd.basis_species_index.at("Ca++")] = 5.0;
  gold_ionic_str += 4 * 5.0;
  basis_m[mgd.basis_species_index.at(">(s)FeOH")] = 6.0;
  basis_m[mgd.basis_species_index.at("radius_neg1")] = 7.0;
  basis_m[mgd.basis_species_index.at("radius_neg1.5")] = 8.0;
 
  // the equilibrium and kinetic molalities do not make any difference due to ionic strength using
  // only basis molalities
  ac.setInternalParameters(
      25.0, mgd, basis_m, std::vector<Real>(9, 1.1), std::vector<Real>(3, 2.2));
 
  EXPECT_NEAR(ac.getIonicStrength(), 0.5 * gold_ionic_str, 1E-8);
  EXPECT_EQ(ac.getStoichiometricIonicStrength(), 2.0E-8);
}
 
TEST(GeochemistryActivityCoefficientsDebyeHuckelTest, getDebyeHuckel)
{
  GeochemistryIonicStrength is(1.0E9, 2.0E9, false, false);
  GeochemistryActivityCoefficientsDebyeHuckel ac(is, database);
  ac.setInternalParameters(
      25.0, mgd, std::vector<Real>(8, 1.0), std::vector<Real>(9), std::vector<Real>(3));
  const DebyeHuckelParameters dh = ac.getDebyeHuckel();
 
  EXPECT_EQ(dh.A, 0.5092);
  EXPECT_EQ(dh.B, 0.3283);
  EXPECT_EQ(dh.Bdot, 0.041);
  EXPECT_EQ(dh.a_water, 1.45397);
  EXPECT_EQ(dh.b_water, 0.022357);
  EXPECT_EQ(dh.c_water, 0.0093804);
  EXPECT_EQ(dh.d_water, -0.0005362);
  EXPECT_EQ(dh.a_neutral, 0.1127);
  EXPECT_EQ(dh.b_neutral, -0.01049);
  EXPECT_EQ(dh.c_neutral, 0.001545);
  EXPECT_EQ(dh.d_neutral, 0.0);
}
 
TEST(GeochemistryActivityCoefficientsDebyeHuckelTest, buildActivityCoefficientsDebyeHuckel)
{
  GeochemistryIonicStrength is(1.0E9, 2.0E9, false, false);
  GeochemistryActivityCoefficientsDebyeHuckel ac(is, database);
  ac.setInternalParameters(
      25.0, mgd, std::vector<Real>(8, 1.0), std::vector<Real>(9), std::vector<Real>(3));
 
  const Real ionic_str = ac.getIonicStrength();
 
  std::vector<Real> basis_ac;
  std::vector<Real> eqm_ac;
  ac.buildActivityCoefficients(mgd, basis_ac, eqm_ac);
 
  EXPECT_EQ(basis_ac.size(), (std::size_t)8);
  EXPECT_EQ(eqm_ac.size(), (std::size_t)9);
 
  const DebyeHuckelParameters dh = ac.getDebyeHuckel();
 
  // Note that GeochemistryActivity has been tested elsewhere: here we're just checking the slots
  // get filled correctly
  for (unsigned i = 1; i < 8; ++i) // don't loop over water
  {
    Real gold = 0.0;
    if (i == 3) // O2(aq)
      gold = std::pow(10.0,
                      GeochemistryActivityCalculators::log10ActCoeffDHBdotNeutral(
                          ionic_str, dh.a_neutral, dh.b_neutral, dh.c_neutral, dh.d_neutral));
    else if (i == 5) // >(s)FeOH
      gold = 1.0;
    else if (i == 6) // radius_neg1
      gold = std::pow(
          10.0,
          GeochemistryActivityCalculators::log10ActCoeffDHBdotAlternative(ionic_str, dh.Bdot));
    else if (i == 7) // radius_neg1.5
      gold = 1.0;
    else
      gold =
          std::pow(10.0,
                   GeochemistryActivityCalculators::log10ActCoeffDHBdot(mgd.basis_species_charge[i],
                                                                        mgd.basis_species_radius[i],
                                                                        std::sqrt(ionic_str),
                                                                        dh.A,
                                                                        dh.B,
                                                                        dh.Bdot));
    ASSERT_NEAR(basis_ac[i], gold, 1.0E-8);
  }
 
  for (unsigned j = 0; j < 9; ++j)
  {
    Real gold = 0.0;
    const std::string nm = mgd.eqm_species_name[j];
    if (nm == "Calcite")
      continue;
    else if (nm == "CO2(aq)" || nm == "CaCO3" || nm == ">(s)FeO-")
      gold = 1.0;
    else if (nm == "seq_radius_neg1")
      gold = std::pow(
          10.0,
          GeochemistryActivityCalculators::log10ActCoeffDHBdotAlternative(ionic_str, dh.Bdot));
    else
      gold =
          std::pow(10.0,
                   GeochemistryActivityCalculators::log10ActCoeffDHBdot(mgd.eqm_species_charge[j],
                                                                        mgd.eqm_species_radius[j],
                                                                        std::sqrt(ionic_str),
                                                                        dh.A,
                                                                        dh.B,
                                                                        dh.Bdot));
    ASSERT_NEAR(eqm_ac[j], gold, 1.0E-8);
  }
}
 
TEST(GeochemistryActivityCoefficientsDebyeHuckelTest, waterActivity)
{
  GeochemistryIonicStrength is(1.0E9, 2.0E9, false, false);
  GeochemistryActivityCoefficientsDebyeHuckel ac(is, database);
  ac.setInternalParameters(
      25.0, mgd, std::vector<Real>(8, 1.0), std::vector<Real>(9), std::vector<Real>(3));
 
  const DebyeHuckelParameters dh = ac.getDebyeHuckel();
  const Real stoi_ionic_str = ac.getStoichiometricIonicStrength();
 
  // note that GeochemistryActivityCalculators::lnActivityDHBdotWater has been tested elsewhere:
  // this is just testing the information gets passed through to
  // GeochemistryActivityCoefficientsDebyeHuckel
  EXPECT_NEAR(ac.waterActivity(),
              std::exp(GeochemistryActivityCalculators::lnActivityDHBdotWater(
                  stoi_ionic_str, dh.A, dh.a_water, dh.b_water, dh.c_water, dh.d_water)),
              1.0E-8);
}