Learning Forum

[ferruccio.pisanello]

Hi I have a question related to heat conduction. In the plasmonic heating example (https://support.lumerical.com/hc/en-us/articles/360041686234-Photothermal-heating-in-plasmonic-nanostructures) convection boundary conditions are used between air/glass and air/gold interfaces. But there is no boundary condition used between the glass/gold interface. Is it because the glass is kept at a constant temperature boundary at the bottom? Is there a way to use a conduction boundary condition in HEAT? for example if we have two solid materials and there is heat conduction between them? Or what I understand is that conductive heat flow between two solid media can be modeled by using a fixed/ref temperature boundary and a higher temperature boundary or a heat source?

Regards
FK

[Khashayar Ghaffari]

Hi Thank you for your question. The heat transfer between adjacent solids is automatically accounted for and doesnÔÇÖt need a separate boundary condition defined (here gold/substrate). On the other hand, as you have mentioned if one of the two materials is fluid, the transfer is determined by convection which would then require adding the corresponding boundary condition.
Best regards