John Doyle
Ansys Employee
Some additional information about phase change from my colleagues:nIf you would like to do phase transitions of any kind-there are two places which need to capture the phase transitionn 1) Enthalpy:- Nonlinear Controls for Transient Thermal Analyses (ansys.com)nand n2) Coefficient of Thermal Expansion changes due to phase transition: Temperature dependent CALPHAD data, published data or special material models (modulus is important as well)n Doing one and not doing the other in Mechanical will not be helpful with phase transition. nThe ideal workflow to accomplish this in Mechanical, would be to set the top layer at liquidus temperature (not solidus) and solve using Newton Raphson to get temperatures followed by applying the BF, Temp with appropriate TRef and CTEs in xx,yy and zz. For solid state phase transition, they also have xy components etc. due to the rotation of solid phase of crystals accompanied by phase transitions and may require special techniques (state variables and UPFs) to handle those aspects.n
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