Specifies the parameters for the selected solver:

• Maximal inner iterations

  Number of maximal allowed iterations needed to solve one linear system of equations ( “inner iterations” ), integer number, default is 1000 (iterative solvers only).

• Maximal outer iterations

  Number of maximal allowed re-computations of the coefficients of the system of equations for non-linear problems. This reconstruction of the matrix together with the solving is called an “outer iteration”, integer number, default is 500.

• Desired residuum

  Desired accuracy of the computation; must be a small real number, default is 1e-12.

• Residuum improvement factor

  At each “outer iteration” the solver is asked to perform inner iterations until the actual residuum has got smaller than the residuum of the previous outer iteration divided by this factor, default is 10 times.

• Forward relaxation factor

  At each iteration, when a new value is computed, only this fraction from the variation is taken. Real number between 0 and 1, default is 0.5.

  For time-dependent computations choose a value closer to 1.

  For pseudo-stationary computations choose a value closer to 0.

Miscellaneous numerical options:

• Track interface

  Turns on the adjustment of the phase boundary in a two phase material when calculating temperature. The vertices next ed to the phase boundary are moved in order to match with the melting isothermal.(default: false)

• Point defects ramp

  Turns on the coupling between interstitial and vacancy concentration smoothly in order to improve the numerical stability.(default: false)