As described in Sections 24.2.2 and 24.2.5, you can include the pull velocities in your solidification/melting calculation to model continuous casting. There are three approaches to modeling continuous casting in FLUENT:
To use this approach (the default), do not turn on the Compute Pull Velocities option.
If you use this approach, you will need to patch constant values or custom field functions for the pull velocities, after you initialize the solution.
Solve Initialize Patch...
See Section 25.14.2 for details about patching values. Note that it is acceptable to patch values for the pull velocities in the entire domain, because the patched values will be used only if the liquid fraction, , is less than 1.
To use this approach, turn on the Compute Pull Velocities option. This method is computationally expensive, and is recommended only if the pull velocities are strongly dependent on the location of the liquid-solid interface.
If you have FLUENT compute the pull velocities, then there are no additional inputs or setup procedures beyond those presented in Section 24.3.1.
To use this approach, perform one iteration with FLUENT computing the pull velocities, and then turn off the Compute Pull Velocities option and continue the calculation. For the remainder of the calculation, FLUENT will use the values computed for the pull velocities at the first iteration.