modelCapillaryVolume
Volume with capillary pressure applied to the liquid
Extends from FCSys.Icons.Names.Top3.
Information
The default surface tension (γ = 0.0663 N/m) is for saturated water at 60 °C, interpolated from [Incropera2002, pp. 924]. Note that the surface tension in [Wang2001] is incorrect (likely unit conversion error).
The default permeability (κ = 6.46×10-5 mm2) is based on the air permeability of SGL Carbon Group Sigracet® 10 BA [SGL2007]. Wang et al. use κ = 10-5 mm2 [Wang2001].
The default contact angle (θ = 140°) is typical of the GDL measurements listed at http://www.chem.mtu.edu/cnlm/research/Movement_of_Water-in_Fuel_Cell_Electrodes.htm (accessed Nov. 22, 2103).
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Geometry | |||
| Q.Volume | V | Volume | |
| Included phases | |||
| Boolean | inclGas | true | Gas |
| Boolean | inclLiquid | true | Liquid |
| Boolean | inclSolid | true | Solid |
| Capillary pressure | |||
| Boolean | inclCapillary | false | Include capillary pressure |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Connectors.Dalton | gas | Interface to the gas phase | |
| Connectors.Amagat | liquid | Interface to the liquid phase | |
| Connectors.Amagat | solid | Interface to the solid phase |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Capillary | capillary | Capillary model | |
| Q.Volume | V_pore | Pore volume | |
| Q.NumberAbsolute | x | liquid.V/(gas.V + liquid.V) | Liquid saturation |
| Conditions.ByConnector.Amagat.VolumeFixed | volume | Fixed volume |