12.  Set time, time step size, and related parameters.

Stepped boundary conditions simulate the sudden contact of molten metal at 2875 ^oF with the mold at ambient temperature.  The program will choose automatic time stepping that will enable the time step size to be modified depending on the severity of nonlinearities in the system (for example, it will take smaller time steps while going through the phase change).  The maximum and minimum time step sizes represent the limits for this automated procedure.

1. Main Menu:  Solution
        -Load Step Opts-Time/Frequenc
             Time-Time Step
2. Enter 3 (hours) for Time at end of load step  -»
3. Enter 0.01 for initial time step size  -»
4. Choose Stepped loading  -»
5. Enter 0.001 for Minimum time step size  -»
6. Enter 0.25 for Maximum time step size  -»
7. OK  -»