Dij
|
Mass diffusion coefficient (m2 s−1) |
Di,eff
|
Effective mass diffusion coefficient (m2 s−1) |
h
|
Specific enthalpy (J kg−1) |
|
Current density (A m−2) |
j0
|
Exchange current density (A m−2) |
|
Diffusive flux of species j (kg m−2s−1) |
keff
|
Thermal effective conductivity (W m−1 K−1) |
Mi
|
Molecular weight of the species i (kg mol−1) |
|
Number of electrons (-) |
P
|
Pressure (Pa) |
R
|
Universal gas constant (W mol−1 K−1) |
Se
|
Energy source term (W m−3 s−1) |
Si
|
Species source term (kg m−3 s−1) |
sμ
|
Fluid friction entropy generation rate (W K−1 m−3) |
sh
|
Heat transfer entropy generation rate (W K−1 m−3) |
sm
|
Mass transfer entropy generation rate (W K−1 m−3) |
sohm
|
Chemical reaction entropy generation rate (W K−1 m−3) |
T
|
Temperature (K) |
t
|
Time (s) |
|
Velocity (m s−1) |
V
|
Voltage (V) |
|
Standard electric potential (V) |
Xi
|
Molar fraction of species i (-) |
Greek symbols |
|
Activation potential (V) |
|
Ohmic loss (V) |
|
Concentration loss (V) |
µ
|
Viscosity (m s−2) |
σ |
Electrical conductivity (Ω−1 m−1) |
|
Tortuosity (-) |
ωi
|
Mass fraction of species i (-) |
|
Electrical potential (V) |