Kyle
Ansys Employee
Is the heat only applied to one of the gratings, or all of them? If it is applied to all of them then the simulating is periodic and you can use insulating BCs in the HEAT simulation to represent periodic boundary conditions. Insulating BCs represent periodic boundaries because the temperature is expected to be the same at either side of the interface between the unit cells, so there will be no heat transferred between the unit cells.
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