p_atm 1[atm] Atmospheric pressure T 800[degC] Temperature mu 3e-5[Pa*s] Viscosity, air dp_a 2[Pa] Pressure drop, anode dp_c 6[Pa] Pressure drop, cathode i0_a 0.1[A/m^2] Exchange current density, anode i0_c 0.01[A/m^2] Exchange current density, cathode Sa_a 1e9[1/m] Specific surface area, anode Sa_c 1e9[1/m] Specific surface area, cathode V_pol 0.05[V] Initial cell polarization perm_a 1e-10[m^2] Anode permeability perm_c 1e-10[m^2] Cathode permeability Eeq_a 0[V] Equilibrium voltage, anode Eeq_c 1[V] Equilibrium voltage, cathode V_cell Eeq_c-Eeq_a-V_pol Cell voltage kleff_a 1[S/m] Electrolyte effective conductivity, anode kseff_a 1000[S/m] Solid effective conductivity, anode kleff_c 1[S/m] Electrolyte effective conductivity, cathode kseff_c 1000[S/m] Solid effective conductivity, cathode kl 5[S/m] Electrolyte conductivity ks 5000[S/m] Current collector conductivity vh2 6e-6 Kinetic volume, H2 vo2 16.6e-6 Kinetic volume, O2 vn2 17.9e-6 Kinetic volume, N2 vh2o 12.7e-6 Kinetic volume, H2O Mh2 2[g/mol] Molar mass, H2 Mo2 32[g/mol] Molar mass, O2 Mn2 28[g/mol] Molar mass, N2 Mh2o 18[g/mol] Molar mass, H2O kd 3.16e-8[m^2/s] Reference diffusivity e_por 0.4 Porosity Dh2h2o kd*(T[1/K])^1.75/(p_atm[1/Pa]*(vh2^(1/3)+vh2o^(1/3))^2)*(1[kg/mol]/Mh2+1[kg/mol]/Mh2o)^0.5 Diffusivity, H2-H2O Do2h2o kd*(T[1/K])^1.75/(p_atm[1/Pa]*(vo2^(1/3)+vh2o^(1/3))^2)*(1[kg/mol]/Mo2+1[kg/mol]/Mh2o)^0.5 Diffusivity, O2-H2O Do2n2 kd*(T[1/K])^1.75/(p_atm[1/Pa]*(vo2^(1/3)+vn2^(1/3))^2)*(1[kg/mol]/Mo2+1[kg/mol]/Mn2)^0.5 Diffusivity, O2-N2 Dn2h2o kd*(T[1/K])^1.75/(p_atm[1/Pa]*(vh2o^(1/3)+vn2^(1/3))^2)*(1[kg/mol]/Mh2o+1[kg/mol]/Mn2)^0.5 Diffusivity, N2-H2O Dh2h2oeff Dh2h2o*e_por^1.5 Effective diffusivity, H2-H2O Do2h2oeff Do2h2o*e_por^1.5 Effective diffusivity, O2-H2O Do2n2eff Do2n2*e_por^1.5 Effective diffusivity, O2-N2 Dn2h2oeff Dn2h2o*e_por^1.5 Effective diffusivity, N2-H2O w_h2ref 0.4 Inlet weight fraction, H2 at anode w_o2ref 0.15 Inlet weight fraction, O2 at cathode w_h2oref 0.37 Inlet weight fraction, H2O at cathode c_tot p_atm/(R_const*T) Total molar concentration c_o2ref c_tot*(w_o2ref/Mo2)/(w_o2ref/Mo2+w_h2oref/Mh2o+(1-w_o2ref-w_h2oref)/Mn2) Reference concentration, O2 at cathode c_h2ref c_tot*(w_h2ref/Mh2)/(w_h2ref/Mh2+(1-w_h2ref)/Mh2o) Reference concentration, H2 at anode c_h2oref c_tot*((1-w_h2ref)/Mh2o)/(w_h2ref/Mh2+(1-w_h2ref)/Mh2o) Reference concentration, H2O at anode W_channel 0.5e-3[m] Gas flow channel width W_rib 0.5e-3[m] Rib width H_gde 1e-4[m] Gas diffusion electrode thickness H_electrolyte 1e-4[m] Electrolyte thickness H_channel 0.5e-3[m] Gas flow channel height L 10e-3[m] Flow channel length