On 06. 02. 21 16:42, py17js@leeds.ac.uk wrote:
Thanks for the reply robert.
I have now read up about interface conductances and realised that I should need a gap between the wire and substrate to correctly implement this as the overlapping boundaries for the wire and subs yielding the wrong flux. I have manged to get my latest code to run and simulate the heat flow out of the wire and into the substrate. I am still unsure as to how I correct input there thermal conductivities and interface conductance if the conductivities are in W/mK and interface conductance is W/m^2K.
Now the mesh is split into two disjoint parts that do not communicate - how do you want to connect the parts - do you have an equation on the interface? It is related to the units - those depend on whether they relate to a volume or surface (= the domains of the weak form integrals).
BTW. in order to obtain temperature evolution in time, have a look at [1], for example.
r.
[1] http://sfepy.org/doc/examples/diffusion-time_advection_diffusion.html