Step 3: Models

Models

1.   Define the solidification model.

Models Solidification & Melting Edit...

(a)   Enable the Solidification/Melting option in the Model group box.

  The Solidification and Melting dialog box will expand to show the related parameters.

(b)   Retain the default value of 100000 for the Mushy Zone Constant.

  This default value is acceptable for most cases.

(c)   Enable the Include Pull Velocities option.

  By including the pull velocities, you will account for the movement of the solidified material as it is continuously withdrawn from the domain in the continuous casting process.

  When you enable this option, the Solidification and Melting dialog box will expand to show the Compute Pull Velocities option. If you were to enable this additional option, ANSYS FLUENT would compute the pull velocities during the calculation. This approach is computationally expensive and is recommended only if the pull velocities are strongly dependent on the location of the liquid-solid interface. In this tutorial, you will patch values for the pull velocities instead of having ANSYS FLUENT compute them.

For more information about computing the pull velocities, see this section in the separate User's Guide.

(d)   Click OK to close the Solidification and Melting dialog box.

   An Information dialog box will open, telling you that available material properties have changed for the solidification model. You will set the material properties later, so you can simply click OK in the dialog box to acknowledge this information.

Note:    ANSYS FLUENT will automatically enable the energy calculation when you enable the solidification model, so you need not visit the Energy dialog box.