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SATURATION_FUNCTION Card
Specifies the permeability function, saturation function, and parameters to be associated with a material property. This card is only for TH or RICHARDS mode. In GENERAL mode, use the CHARACTERISTIC_CURVES card.
Required Cards:
- SATURATION_FUNCTION <string>
- Opens the SATURATION_FUNCTION block, where <string> indicates the name by which this saturation function may be identified and/or linked.
- SATURATION_FUNCTION_TYPE <string>
Indicates which saturation function is used. The options include: VAN_GENUCTHEN, BROOKS_COREY, or THOMEER_COREY.
- Required cards specific to each SATURATION_FUNCTION_TYPE:
- VAN_GENUCHTEN:
- ALPHA <float>
- The van Genuchten alpha parameter [Pa-1].
- LAMBDA <float>
- The van Genuchten m parameter, as in (m = 1-1/n) [-].
- BROOKS_COREY:
- ALPHA <float>
- The Brooks-Corey alpha parameter [Pa-1].
- LAMBDA <float>
- The Brooks-Corey lambda parameter [-].
- THOMEER_COREY
- ALPHA <float>
- The Thomeer-Corey alpha parameter [Pa-1].
- LAMBDA <float>
- The Thomer-Corey m parameter [-].
- PERMEABILITY_FUNCTION_TYPE <string>
- Indicates which permeability function is used. Options include: BURDINE, or MUALEM.
- RESIDUAL_SATURATION <float>
- Indicates the fluid residual saturation [-].
Optional Cards:
- BETAC <float>
- Placeholder. Currently not used.
- MAX_CAPILLARY_PRESSURE <float>
- Cut off for maximum capillary pressure [Pa]. Currently supported in the C02 modes only.
- POWER <float>
- Placeholder. Currently not used.
Examples
SATURATION_FUNCTION sf1 SATURATION_FUNCTION_TYPE VAN_GENUCHTEN PERMEABILITY_FUNCTION_TYPE BURDINE RESIDUAL_SATURATION 0.16d0 LAMBDA 0.3391d0 ALPHA 7.2727d-4 / SATURATION_FUNCTION sf2 SATURATION_FUNCTION_TYPE BROOKS_COREY PERMEABILITY_FUNCTION_TYPE BURDINE RESIDUAL_SATURATION 0.1299d0 LAMBDA 0.7479d0 ALPHA 1.10d-5 / SATURATION_FUNCTION sf3 SATURATION_FUNCTION_TYPE VAN_GENUCHTEN PERMEABILITY_FUNCTION_TYPE MUALEM RESIDUAL_SATURATION 0.16d0 LAMBDA 0.3391d0 ALPHA 7.2727d-4 /
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