I am doing some thermal modelling in a solid assembly. I have tried several mesh sizes and have compared the values I get for each solution as the mesh size decreases. See results in table below. My question is: do I have a properly converged solution if the temperature is not changing significantly but the heat flux is?
One thing to note is that the heat flux is sampled in a hot vertex (where 3 sides of a box make a point) so not sure if this causes some kind of singularity error? I have taken measurements from another part of the model (nearby but not a geometrical discontinuity) and the heat flux changes for this location are -10.2% and +16.3% respectively - this more closely follows the pattern shown in the temp % change column but is obviously still a relatively high percentage.
|Mesh||Max Temp (C)||Change %||Heat Flux (W/m2)||Change %|
A second question is whether the increased % change in temp in row 3 vs row 2 signals that the model is not converged and that I should continue reducing mesh size?
Thanks for replies in advance,