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NUMERICAL_METHODS

Specifies numerical methods employed to solve a process model.

Required Cards:

NUMERICAL_METHODS <string>

Opens the numerical methods block and specifies the process model for which the numerical methods are employed (e.g. FLOW, TRANSPORT).

Optional Cards:

TIMESTEPPER

Time integration settings.

NEWTON_SOLVER

Newton solver settings.

LINEAR_SOLVER

Linear solver settings.

Examples

NUMERICAL_METHODS FLOW

  TIMESTEPPER
    TIMESTEP_REDUCTION_FACTOR 0.75d0
    TIMESTEP_MAXIMUM_GROWTH_FACTOR 1.9d0
    MAXIMUM_CONSECUTIVE_TS_CUTS 10
    INITIAL_TIMESTEP_SIZE 1.d0 h
    MAXIMUM_TIMESTEP_SIZE 1.d0 y
  /

  NEWTON_SOLVER
    ITOL_UPDATE 1.d0
    RTOL 1.d-20
    MAXIMUM_NUMBER_OF_ITERATIONS 15
    CONVERGENCE_INFO
  /

  LINEAR_SOLVER
    SOLVER DIRECT
  /

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