I am studying the heat flow on a geophysical project. I have a slab of ice with a thin layer of CO2 on top. The surface is quite flat but there is a gentle slope and small ups and downs due to the topography of the area. I know the temperatures at the surface and at the bottom of the model. I have run different simulations with different properties without problems but the heat flow at the surface is not as smooth as I expected. Solutions indicates that there are some points with very low heat flow at the surface of the model and I don’t know why. At the beginning I thought that these points could be due to the topography, but the differences in altitude are very very small. I have checked the geometry and it seems fine. Could I have a problem with the mesh? Any suggestions will be welcome.
Thank you very much!