how to account for Latent heat of fusion

[imse]

Hi,

I was trying to model in the latent heat of fusion, how do I get to keep the temperature at melting temp

I tried using enthalphy values, where I appplied for 0 degree, 0 enthalpy and then couple of values around the melting temperature.. it seems to have no effect... maybe because the temperature that get calculted is way above the melting temperature???

I would appreciate any help or suggestion.

Thank you

Robin