Modelling Phase Change using software....

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Hi. I want to model a simple liquid boiling process so as to find Evaporation Temperature. I have been trying it using FLUENT 6.0 in the lab, n realise that only FLUENT 6.1 can model liquid boiling processes. Hence, I am in a fix now, can't carry on my project since the labs dun have the latest version 6.1, n also i cannot find version 6.1 from outside source. Hence, can anyone advise me on other types of software to use that can model liq-boiling processes, or any software that can find evaporation temperature?? I sincerely hope that u all can help me.... Thanks in advance.....