**************** **porous_unsat** **************** :: EQ = porous_unsat {Galerkin_wt} P_LIQ {Interpol_fnc} ----------------------- **Description / Usage** ----------------------- This equation cannot be invoked in an element block in which the media type is set to POROUS_TWO_PHASE (cf. *Microstructure Properties, Media Type* card). Otherwise, it is used exactly as the *porous_liq* equation card; please consult that section for a detailed discussion. See *porous_liq* card for description of input requirements. ------------ **Examples** ------------ See *porous_liq* card. ------------------------- **Technical Discussion** ------------------------- This card is used for single phase (viz. constant gas pressure) simulations of partially saturated flow, as described by the *Media Type* material property card. The equation it invokes is one of Darcy flow in a partially saturated medium in which the gas phase pressure is taken as constant. The dependent variable here is the liquid phase pressure. -------------- **References** -------------- GT-008.2: Porous Media Capabilities/Tutorial for GOMA. User Guidance for Saturated Porous Penetration Problems, August 11, 1999, P. R. Schunk GT-009.3: GOMA’s Capabilities for Partially Saturated Flow in Porous Media, September 1, 2002, P. R. Schunk