Calculating Volume Expansion during Solidification

How can I calculate the volume expansion occurring during solidification?

When you use the solidification/melting model (Define->Models->Solidification and Melting), the solidification phenomena of a liquid (such as molten metal) can be analyzed. However, this model is to calculate how much liquid is solidified by approximating the momentum of the liquid as zero in accordance with the solidification rate, but the change in physical properties due to the phase change is not considered. To consider the change in physical properties due to phase-change, impart the temperature dependence on the physical properties value.

For more details, refer to this document.