Options

WINDOW EPSILON <float>

Specifies the tolerance or window that must be exceeded before phase change will occur.

GAS_COMPONENT_FORMULA_WEIGHT <float>

Specifies the molecular weight of the gas component in grams per mole.

TWO_PHASE_ENERGY_DOF <string>

Specifies the unknown solved for the energy degree of freedom. Options are AIR_PRESSURE or TEMPERATURE.

ISOTHERMAL

Disables the energy calculation.

NO_AIR

Disables the gas component calculation.

MAXIMUM_PRESSURE_CHANGE < float>

Truncates maximum pressure change in a Newton iteration. (Not to be confused with MAX_PRESSURE_CHANGE in OPTIONS of process model block.)

MAX_ITERATION_BEFORE_DAMPING <integer>

Specifies the threshold number of Newton iterations before damping is imposed.

DAMPING_FACTOR <float>

The scalar value by which the solution is damped once damping is imposed.

Examples

...
PROCESS_MODELS
  SUBSURFACE_FLOW flow
    MODE GENERAL
    OPTIONS
      !WINDOW_EPSILON 1.d-4
      ISOTHERMAL
      TWO_PHASE_ENERGY_DOF TEMPERATURE
      GAS_COMPONENT_FORMULA_WEIGHT 2.01588D0 ! kg/kmol
      MAXIMUM_PRESSURE_CHANGE 1.0D6 ! truncates pressure change
    /
  /
/
...