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Ansys Learning Forum › Forums › Discuss Simulation › General Mechanical › transient thermal result for laser annealing (solid>>liquid>>solid) › Reply To: transient thermal result for laser annealing (solid>>liquid>>solid)

January 6, 2025 at 3:42 pm
Chandra Sekaran
Ansys Employee

Hi, you can refer to the Theroy manual at https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v242/en/ans_thry/thy_heat1.html  for the equations used in heat transfer analysis in Mechanical and MAPDL products. Also the thermal analysis guide might be useful to review ( https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v242/en/ans_the/Hlp_G_THE3.html )

You can input either specific heat/density or enthalpy. If both are spcified enthalpy vs temperature is used. Enthalpy increases continuously with temperature. Specific heat requires a step change over the phase change temperatures. So be sure to use small time steps so this step change is not missed. 

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