int tester()
{
//description
std::vector<std::string> neutrals;
std::vector<std::string> ions;
neutrals.push_back("N2");
neutrals.push_back("CH4");
neutrals.push_back("C2H");
//ionic system contains neutral system
ions = neutrals;
ions.push_back("N2+");
Scalar MN(14.008L), MC(12.011), MH(1.008L);
Scalar MN2 = 2.L*MN , MCH4 = MC + 4.L*MH, MC2H = 2.L * MC + MH;
std::vector<Scalar> Mm;
Mm.push_back(MN2);
Mm.push_back(MCH4);
Mm.push_back(MC2H);
//densities
std::vector<Scalar> molar_frac;
molar_frac.push_back(0.95999L);
molar_frac.push_back(0.04000L);
molar_frac.push_back(0.00001L);
molar_frac.push_back(0.L);
Scalar dens_tot(1e12L);
//hard sphere radius
std::vector<Scalar> hard_sphere_radius;
hard_sphere_radius.push_back(2.0675e-8L * 1e-2L); //N2 in cm -> m
hard_sphere_radius.push_back(2.3482e-8L * 1e-2L); //CH4 in cm -> m
hard_sphere_radius.push_back(0.L); //C2H
//zenith angle
//not necessary
//photon flux
//not necessary
////cross-section
//not necessary
//altitudes
Scalar zmin(600.),zmax(1400.),zstep(10.);
//binary diffusion
Scalar bCN1(1.04e-5 * 1e-4),bCN2(1.76); //cm2 -> m2
Planet::DiffusionType CN_model(Planet::DiffusionType::Wakeham);
Scalar bCC1(5.73e16 * 1e-4),bCC2(0.5); //cm2 -> m2
Planet::DiffusionType CC_model(Planet::DiffusionType::Wilson);
Scalar bNN1(0.1783 * 1e-4),bNN2(1.81); //cm2 -> m2
Planet::DiffusionType NN_model(Planet::DiffusionType::Massman);
/************************
* first level
************************/
//altitude
Planet::Altitude<Scalar,std::vector<Scalar> > altitude(zmin,zmax,zstep);
//neutrals
Antioch::ChemicalMixture<Scalar> neutral_species(neutrals);
//ions
Antioch::ChemicalMixture<Scalar> ionic_species(ions);
//chapman
//not needed
//binary diffusion
Planet::BinaryDiffusion<Scalar> N2N2( Antioch::Species::N2, Antioch::Species::N2 , bNN1, bNN2, NN_model);
Planet::BinaryDiffusion<Scalar> N2CH4( Antioch::Species::N2, Antioch::Species::CH4, bCN1, bCN2, CN_model);
Planet::BinaryDiffusion<Scalar> CH4CH4( Antioch::Species::CH4, Antioch::Species::CH4, bCC1, bCC2, CC_model);
Planet::BinaryDiffusion<Scalar> N2C2H( Antioch::Species::N2, Antioch::Species::C2H);
Planet::BinaryDiffusion<Scalar> CH4C2H( Antioch::Species::CH4, Antioch::Species::C2H);
std::vector<std::vector<Planet::BinaryDiffusion<Scalar> > > bin_diff_coeff;
bin_diff_coeff.resize(2);
bin_diff_coeff[0].push_back(N2N2);
bin_diff_coeff[0].push_back(N2CH4);
bin_diff_coeff[0].push_back(N2C2H);
bin_diff_coeff[1].push_back(N2CH4);
bin_diff_coeff[1].push_back(CH4CH4);
bin_diff_coeff[1].push_back(CH4C2H);
/************************
* second level
************************/
//temperature
std::vector<Scalar> T0,Tz;
read_temperature<Scalar>(T0,Tz,"input/temperature.dat");
std::vector<Scalar> neutral_temperature;
linear_interpolation(T0,Tz,altitude.altitudes(),neutral_temperature);
Planet::AtmosphericTemperature<Scalar, std::vector<Scalar> > temperature(neutral_temperature, neutral_temperature, altitude);
//photon opacity
//not needed
//reaction sets
//not needed
/************************
* third level
************************/
//atmospheric mixture
Planet::AtmosphericMixture<Scalar,std::vector<Scalar>, std::vector<std::vector<Scalar> > > composition(neutral_species, ionic_species, altitude, temperature);
composition.init_composition(molar_frac,dens_tot);
composition.set_hard_sphere_radius(hard_sphere_radius);
composition.initialize();
//kinetics evaluators
//not needed
/************************
* fourth level
************************/
//photon evaluator
//not needed
//molecular diffusion
Planet::MolecularDiffusionEvaluator<Scalar,std::vector<Scalar>, std::vector<std::vector<Scalar> > > molecular_diffusion(bin_diff_coeff,
composition,
altitude,
temperature);
molecular_diffusion.make_molecular_diffusion();
//eddy diffusion
//not needed
/************************
* checks
************************/
molar_frac.pop_back();//get the ion outta here
Scalar Matm(0.L);
for(unsigned int s = 0; s < molar_frac.size(); s++)
{
Matm += molar_frac[s] * composition.neutral_composition().M(s);
}
Matm *= 1e-3L; //to kg
std::vector<std::vector<Scalar> > densities;
calculate_densities(densities, dens_tot, molar_frac, zmin,zmax,zstep, temperature.neutral_temperature(), Mm);
//N2, CH4, C2H
std::vector<std::vector<Scalar> > Dij;
Dij.resize(2);
Dij[0].resize(3,0.L);
Dij[1].resize(3,0.L);
int return_flag(0);
for(unsigned int iz = 0; iz < altitude.altitudes().size(); iz++)
{
Scalar P = pressure(composition.total_density()[iz],temperature.neutral_temperature()[iz]);
Scalar T = temperature.neutral_temperature()[iz];
Dij[0][0] = binary_coefficient(T,P,bNN1,bNN2); //N2 N2
Dij[1][1] = binary_coefficient(T,P,bCC1 * Antioch::ant_pow(Planet::Constants::Convention::T_standard<Scalar>(),bCC2 + Scalar(1.L))
* Planet::Constants::Universal::kb<Scalar>()
/ Planet::Constants::Convention::P_normal<Scalar>(),bCC2 + Scalar(1.L)); //CH4 CH4
Dij[0][1] = binary_coefficient(T,P,bCN1 * Antioch::ant_pow(Planet::Constants::Convention::T_standard<Scalar>(),bCN2),bCN2); //N2 CH4
Dij[0][2] = binary_coefficient(Dij[0][0],Mm[0],Mm[2]); //N2 C2H
Dij[1][2] = binary_coefficient(Dij[1][1],Mm[1],Mm[2]); //CH4 C2H
Dij[1][0] = Dij[0][1]; //CH4 N2
for(unsigned int s = 0; s < molar_frac.size(); s++)
{
Scalar tmp(0.L);
Scalar M_diff(0.L);
for(unsigned int medium = 0; medium < 2; medium++)
{
if(s == medium)continue;
tmp += densities[medium][iz]/Dij[medium][s];
}
Scalar Ds = (barometry(zmin,altitude.altitudes()[iz],neutral_temperature[iz],Matm,dens_tot) - densities[s][iz]) / tmp;
for(unsigned int j = 0; j < molar_frac.size(); j++)
{
if(s == j)continue;
M_diff += composition.total_density()[iz] * composition.neutral_molar_fraction()[j][iz] * composition.neutral_composition().M(j);
}
M_diff /= Scalar(molar_frac.size() - 1);
Scalar Dtilde = Ds / (Scalar(1.L) - composition.neutral_molar_fraction()[s][iz] * (Scalar(1.L) - composition.neutral_composition().M(s)/M_diff));
return_flag = return_flag ||
check_test(Dtilde,molecular_diffusion.Dtilde()[s][iz],"D tilde of species at altitude");
}
return_flag = return_flag ||
check_test(Dij[0][0],molecular_diffusion.binary_coefficient(0,0,T,P),"binary molecular coefficient N2 N2 at altitude") ||
check_test(Dij[0][1],molecular_diffusion.binary_coefficient(0,1,T,P),"binary molecular coefficient N2 CH4 at altitude") ||
check_test(Dij[0][2],molecular_diffusion.binary_coefficient(0,2,T,P),"binary molecular coefficient N2 C2H at altitude") ||
check_test(Dij[1][1],molecular_diffusion.binary_coefficient(1,1,T,P),"binary molecular coefficient CH4 CH4 at altitude") ||
check_test(Dij[1][2],molecular_diffusion.binary_coefficient(1,2,T,P),"binary molecular coefficient CH4 C2H at altitude");
}
return return_flag;
}
int test()
{
std::vector<std::string> neutrals;
std::vector<std::string> ions;
neutrals.push_back("N2");
neutrals.push_back("CH4");
ions.push_back("N2+");
ions.push_back("e");
//photons
std::vector<Scalar> lambda,phy1AU;
read_hv_flux<Scalar>(lambda,phy1AU,"./input/hv_SSI.dat");
Scalar chi(100.);
Planet::Chapman<Scalar> chapman(chi);
Planet::PhotonFlux<Scalar,std::vector<Scalar>, std::vector<std::vector<Scalar> > > photon(chapman);
photon.set_photon_flux_top_atmosphere(lambda,phy1AU,Planet::Constants::Saturn::d_Sun<Scalar>());
//densities
std::vector<Scalar> molar_frac = {0.96,0.04,0.,0.};
Scalar dens_tot(1e12);
//diffusion
Planet::BinaryDiffusion<Scalar> N2N2( Antioch::Species::N2, Antioch::Species::N2 , 5.09e+16,0.81, Planet::DiffusionType::Massman);
Planet::BinaryDiffusion<Scalar> N2CH4( Antioch::Species::N2, Antioch::Species::CH4, 7.34e+16,0.75, Planet::DiffusionType::Massman);
Planet::BinaryDiffusion<Scalar> CH4CH4( Antioch::Species::CH4, Antioch::Species::CH4, 5.73e+16,0.50, Planet::DiffusionType::Massman);
//atmosphere
Planet::Atmosphere<Scalar, std::vector<Scalar>, std::vector<std::vector<Scalar> > > atm(neutrals,ions,photon);
atm.make_altitude_grid(600.,1400.,10.);
//temperature
std::vector<Scalar> T0,Tz;
read_temperature<Scalar>(T0,Tz,"input/temperature.dat");
atm.set_temperature(T0,Tz);
//cross-section
std::vector<Scalar> sigma;
read_crossSection<Scalar>(lambda,sigma,"./input/N2_hv_cross-sections.dat",3);
atm.add_photoabsorption("N2",lambda,sigma);
read_crossSection<Scalar>(lambda,sigma,"./input/CH4_hv_cross-sections.dat",9);
atm.add_photoabsorption("N2",lambda,sigma);
atm.add_photoabsorption("CH4",lambda,sigma);
//init compo
atm.init_composition(molar_frac,dens_tot);
//diffusion
atm.diffusion().set_binary_coefficient(0,0,N2N2);
atm.diffusion().set_binary_coefficient(0,1,N2CH4);
atm.diffusion().set_binary_coefficient(1,1,CH4CH4);
atm.make_diffusion();
//thermal coefficient
Scalar K0(4.3e6L);
atm.set_K0(K0);
atm.make_thermal_coefficient();
//solver
Planet::CrankNicholson<Scalar,std::vector<Scalar>, std::vector<std::vector<Scalar> > > solver;
int return_flag(0);
return return_flag;
}
