.FuelCellLib.Layer1D.mem_layer

Information

mem_Layer-Layer1D




This class represents the method of finite volumes to solve the one dimensional problem of the layer. Also in this class all parameter of transport phenomena and control volume of membrane are defined. One of these parameters, "n" is the number of finite volumes of the layer. The simulation can become too slowed if the parameter "n" is very high. The selection of the variable modeling hypothesis is defined by the parameters:
"ModHyp3":Electro-Osmotic drag effect(0:Off,1:On)
"ModHyp4":Electrolyte conductivity dependence(0:Off,1:On)

Parameters

Name Default Description
T 340 Operation temperature of membrane layer [K]
av 1e-9 Specific condensation surface [m2/m3]
b 0.001 Material transfer coeficient [m/s]
Ee 0.72 Volumetric fraction of electrolyte
da 1e-5 Thickness of transport phenomena [m]
tau 1 Tortuosity
D2 1e-6 Constant Fick diffusion coefficient for steam water [m2/s]
Dwl 1e-8 Surface diffusion coefficient of H2O, liquid phase [m2/s]
ks 1e4 Electrical conducivity of the solid [S/m]
kpo 1e-2 Constant protonic conducivity of the electrolyte [S/m]
posat 3169 Reference Saturation pressure [Pa]
Tosat 298.16 Reference Saturation temperature [K]
rom 2000 Density of the electrolyte [kg/m3]
roh2ol 972 Density of water [kg/m3]
Mm 1.1 Molar mass of the electrolyte [kg/mol]
n 10 Number of finite elements for membrane layer
ModHyp3 0 Electro-Osmotic drag effect(0:Off,1:On)
ModHyp4 1 Electrolyte conductivity dependence(0:Off,1:On)


References


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