Gas Phase Relative Permeability Card (HYDT-KE)

This card allows the user to declare and define a relative permeability-saturation function for the gas phase for each defined rock/soil type.  Every rock/soil type defined on the Rock/Soil Zonation Card must be referenced.  With the IJK Indexing option, node dependent parameters are entered via external files and node independent parameters are entered directly on the card.  Gas relative permeability function types and the required input items are dependent on the operational mode.  The Mualem and Burdine relative permeability functions are also dependent on the saturation function type and are strictly applicable to the van Genuchten (1980) and Brooks and Corey (1964) functions.  For these functions, either the van Genuchten 'm' parameter or the Brooks and Corey lambda parameter can be defaulted to the values entered or defaulted with the saturation function.  Functional forms for the relative permeability-saturation functions are preferred. Refer to the Gas Relative Permeability Options (HYDT-KE) page for a complete description of aqueous relative permeability-saturation functions.