*********************************** **Liquid phase reference pressure** *********************************** :: Liquid phase reference pressure = CONSTANT [M/L-t2] or [N/L2] ----------------------- **Description / Usage** ----------------------- This card is used to specify the model and model parameters for the liquid-phase compressibility reference pressure. See *Liquid phase compressibility* card for discussion and theory. +-----------------------------+-------------------------------------------------------------------------------------+ |**CONSTANT** |model for the reference pressure, currently the only available option. It requires a | | |single floating point value: | | | | | | * - The reference pressure, in units of pressure. | +-----------------------------+-------------------------------------------------------------------------------------+ ------------ **Examples** ------------ The cards :: Liquid phase compressibility = CONSTANT {beta_liquid} :: Liquid phase reference pressure = CONSTANT {p_not} leads to the application of a linearized compressibility model for the density of liquid in the time-derivative capacitance term. This is useful for rigid porous media when the conditions are such that the saturation front is sharp. ------------------------- **Technical Discussion** ------------------------- See discussion on *Liquid phase compressibility* card. -------------- **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