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SUBSURFACE_FLOW

Required Cards

MODE <string>
Specifies the flow mode to be employed. Follow the links below for a description of each flow mode’s options. The options for <string> include: TH, GENERAL, RICHARDS, MPHASE, IMMIS, MISCIBLE, FLASH2, TOIL_IMS.

Water Modes

RICHARDS: single-phase variably saturated flow

GENERAL: two-phase air-water-energy

TH: variably saturated flow and energy (and optional ice phase)

Supercritical CO2 Modes

MPHASE: supercritical CO2-water-energy

IMMIS: immiscible two-phase CO2-water-energy

MISCIBLE: miscible H2O-glycol

FLASH2: supercritical CO2-water-energy

Optional Cards

OPTIONS

MODE-dependent block for defining options for each flow process model. Click on the MODEs above to see MODE-dependent options. Options for all MODEs are listed below:

MAX_XXX_CHANGE

Attempts to govern the time step size based on the specified value of the variable:

MAX_PRESSURE_CHANGE <float> (default = 5.d5 [Pa])

MAX_TEMPERATURE_CHANGE <float> (default = 5.d0)

MAX_CONCENTRATION_CHANGE <float> (default = 1.d0)

MAX_SATURATION_CHANGE <float> (default = 0.5d0)

PRESSURE_DAMPENING_FACTOR <float>
Dampens the update vector by this value.
MAX_CFL <float>
Restricts flow process model timestep size to <= <float> specified.

Examples

SIMULATION
  SIMULATION_TYPE SUBSURFACE
  PROCESS_MODELS
    SUBSURFACE_FLOW flow
      MODE GENERAL
      OPTIONS
        ISOTHERMAL
        TWO_PHASE_ENERGY_DOF TEMPERATURE
        GAS_COMPONENT_FORMULA_WEIGHT 2.01588d0
        MAX_PRESSURE_CHANGE 1.0d6
        PRESSURE_DAMPENING_FACTOR 0.6d0
        MAX_CFL 1.d0
      /
    /
  /
END